./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 0.1.23-1dbac8b [2018-10-26 22:55:23,693 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:55:23,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:55:23,705 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:55:23,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:55:23,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:55:23,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:55:23,712 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:55:23,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:55:23,719 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:55:23,720 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:55:23,720 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:55:23,721 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:55:23,722 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:55:23,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:55:23,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:55:23,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:55:23,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:55:23,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:55:23,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:55:23,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:55:23,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:55:23,733 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:55:23,734 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:55:23,734 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:55:23,735 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:55:23,736 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:55:23,736 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:55:23,737 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:55:23,738 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:55:23,739 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:55:23,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:55:23,739 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:55:23,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:55:23,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:55:23,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:55:23,747 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:55:23,764 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:55:23,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:55:23,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:55:23,770 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:55:23,771 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:55:23,772 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:55:23,772 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:55:23,772 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:55:23,772 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:55:23,772 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:55:23,773 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:55:23,774 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:55:23,774 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:55:23,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:55:23,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:55:23,774 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:55:23,775 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:55:23,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:55:23,775 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:55:23,775 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:55:23,775 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:55:23,775 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:55:23,776 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:55:23,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:55:23,776 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_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:23,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:55:23,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:55:23,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:55:23,836 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:55:23,837 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:55:23,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:23,889 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/7ca68cebd/08e2acba48174858a8e74cc84fec0c4f/FLAG0378bcfe6 [2018-10-26 22:55:24,282 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:55:24,283 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:24,288 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/7ca68cebd/08e2acba48174858a8e74cc84fec0c4f/FLAG0378bcfe6 [2018-10-26 22:55:24,303 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/7ca68cebd/08e2acba48174858a8e74cc84fec0c4f [2018-10-26 22:55:24,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:55:24,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:55:24,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:55:24,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:55:24,319 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:55:24,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ca8fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24, skipping insertion in model container [2018-10-26 22:55:24,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:55:24,356 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:55:24,499 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:55:24,505 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:55:24,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:55:24,546 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:55:24,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24 WrapperNode [2018-10-26 22:55:24,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:55:24,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:55:24,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:55:24,547 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:55:24,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... [2018-10-26 22:55:24,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:55:24,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:55:24,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:55:24,580 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:55:24,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:55:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:55:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:55:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:55:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:55:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:55:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-10-26 22:55:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:55:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:55:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:55:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:55:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:55:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:55:25,121 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:55:25,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:25 BoogieIcfgContainer [2018-10-26 22:55:25,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:55:25,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:55:25,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:55:25,127 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:55:25,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:55:24" (1/3) ... [2018-10-26 22:55:25,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9d98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:25, skipping insertion in model container [2018-10-26 22:55:25,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:24" (2/3) ... [2018-10-26 22:55:25,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd9d98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:25, skipping insertion in model container [2018-10-26 22:55:25,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:25" (3/3) ... [2018-10-26 22:55:25,130 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:25,141 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:55:25,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:55:25,166 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:55:25,198 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:55:25,205 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:55:25,205 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:55:25,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:55:25,206 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:55:25,206 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:55:25,206 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:55:25,206 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:55:25,206 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:55:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-10-26 22:55:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 22:55:25,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:55:25,232 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:55:25,235 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:55:25,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:55:25,241 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-10-26 22:55:25,243 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:55:25,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:55:25,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:55:25,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:55:25,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:55:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:55:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:55:25,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:55:25,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:55:25,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:55:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:55:25,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:55:25,397 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-10-26 22:55:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:55:25,419 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-26 22:55:25,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:55:25,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-10-26 22:55:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:55:25,429 INFO L225 Difference]: With dead ends: 44 [2018-10-26 22:55:25,430 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:55:25,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:55:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:55:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:55:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:55:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-26 22:55:25,472 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-10-26 22:55:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:55:25,472 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-26 22:55:25,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:55:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-26 22:55:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:55:25,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:55:25,473 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:55:25,474 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:55:25,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:55:25,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-10-26 22:55:25,476 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:55:25,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:55:25,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:55:25,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:55:25,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:55:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:55:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:55:25,520 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:55:25,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:55:25 BoogieIcfgContainer [2018-10-26 22:55:25,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:55:25,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:55:25,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:55:25,552 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:55:25,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:25" (3/4) ... [2018-10-26 22:55:25,558 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:55:25,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:55:25,559 INFO L168 Benchmark]: Toolchain (without parser) took 1252.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:55:25,561 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:55:25,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.85 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:55:25,563 INFO L168 Benchmark]: Boogie Preprocessor took 32.87 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:55:25,563 INFO L168 Benchmark]: RCFGBuilder took 542.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:55:25,564 INFO L168 Benchmark]: TraceAbstraction took 428.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:55:25,566 INFO L168 Benchmark]: Witness Printer took 6.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:55:25,570 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.85 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.87 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 542.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 428.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L44] double d, r; [L46] d = __VERIFIER_nondet_double() [L49] CALL, EXPR SqrtR(d) VAL [\old(Input)=2, _EPS=1/1000000] [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L24] xnp1 = xn [L25] residu = 2.0*_EPS*(xn+xnp1) [L26] lsup = _EPS * (xn+xnp1) [L27] linf = -lsup [L28] cond = ((residu > lsup) || (residu < linf)) [L29] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L30] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L39] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L49] EXPR SqrtR(d) VAL [_EPS=1/1000000, d=2, SqrtR(d)=4] [L49] r = SqrtR(d) [L51] CALL __VERIFIER_assert(r >= 0.3 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L15] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L15] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:55:27,768 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:55:27,769 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:55:27,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:55:27,780 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:55:27,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:55:27,782 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:55:27,784 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:55:27,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:55:27,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:55:27,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:55:27,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:55:27,789 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:55:27,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:55:27,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:55:27,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:55:27,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:55:27,795 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:55:27,796 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:55:27,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:55:27,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:55:27,801 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:55:27,802 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:55:27,803 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:55:27,803 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:55:27,804 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:55:27,805 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:55:27,806 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:55:27,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:55:27,808 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:55:27,808 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:55:27,809 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:55:27,810 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:55:27,810 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:55:27,811 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:55:27,811 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:55:27,812 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 22:55:27,825 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:55:27,825 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:55:27,826 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:55:27,826 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:55:27,827 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:55:27,827 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:55:27,827 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:55:27,827 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:55:27,827 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:55:27,828 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:55:27,829 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:55:27,829 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:55:27,829 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:55:27,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:55:27,831 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:55:27,831 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:55:27,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:55:27,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:55:27,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:55:27,832 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:55:27,832 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:55:27,832 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:55:27,833 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 22:55:27,833 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:55:27,833 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:55:27,833 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:55:27,833 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_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:27,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:55:27,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:55:27,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:55:27,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:55:27,891 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:55:27,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:27,945 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/b5ebb2c94/a6bc062ac3e44254b6e6e87369d9a3f6/FLAGbfde87c56 [2018-10-26 22:55:28,332 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:55:28,334 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/sv-benchmarks/c/float-benchs/sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:28,341 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/b5ebb2c94/a6bc062ac3e44254b6e6e87369d9a3f6/FLAGbfde87c56 [2018-10-26 22:55:28,359 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/data/b5ebb2c94/a6bc062ac3e44254b6e6e87369d9a3f6 [2018-10-26 22:55:28,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:55:28,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:55:28,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:55:28,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:55:28,372 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:55:28,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2373809e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28, skipping insertion in model container [2018-10-26 22:55:28,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:55:28,412 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:55:28,626 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:55:28,635 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:55:28,663 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:55:28,684 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:55:28,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28 WrapperNode [2018-10-26 22:55:28,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:55:28,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:55:28,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:55:28,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:55:28,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... [2018-10-26 22:55:28,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:55:28,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:55:28,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:55:28,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:55:28,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:55:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:55:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:55:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:55:28,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:55:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:55:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:55:37,997 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:55:37,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:37 BoogieIcfgContainer [2018-10-26 22:55:37,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:55:37,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:55:37,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:55:38,004 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:55:38,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:55:28" (1/3) ... [2018-10-26 22:55:38,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be86bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:38, skipping insertion in model container [2018-10-26 22:55:38,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:28" (2/3) ... [2018-10-26 22:55:38,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be86bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:38, skipping insertion in model container [2018-10-26 22:55:38,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:37" (3/3) ... [2018-10-26 22:55:38,008 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval_true-unreach-call.c [2018-10-26 22:55:38,019 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:55:38,027 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:55:38,044 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:55:38,075 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:55:38,076 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:55:38,076 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:55:38,076 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:55:38,077 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:55:38,077 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:55:38,078 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:55:38,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:55:38,078 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:55:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-10-26 22:55:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 22:55:38,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:55:38,104 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:55:38,106 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:55:38,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:55:38,112 INFO L82 PathProgramCache]: Analyzing trace with hash 469878416, now seen corresponding path program 1 times [2018-10-26 22:55:38,117 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:55:38,118 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:55:38,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 22:55:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:55:39,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:55:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:55:39,719 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:55:39,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:55:39,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:55:39,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:55:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:55:39,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:55:39,760 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-10-26 22:55:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:55:39,785 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-26 22:55:39,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:55:39,787 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-10-26 22:55:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:55:39,795 INFO L225 Difference]: With dead ends: 44 [2018-10-26 22:55:39,795 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 22:55:39,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:55:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 22:55:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 22:55:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:55:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-26 22:55:39,838 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-10-26 22:55:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:55:39,838 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-26 22:55:39,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:55:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-26 22:55:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:55:39,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:55:39,839 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:55:39,840 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:55:39,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:55:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1576115003, now seen corresponding path program 1 times [2018-10-26 22:55:39,841 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:55:39,841 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:39,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:55:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:55:41,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:55:52,251 WARN L179 SmtUtils]: Spent 9.25 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-10-26 22:55:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:55:52,256 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:55:52,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:55:52,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:55:52,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:55:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:55:52,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:55:52,283 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2018-10-26 22:55:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:55:58,692 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-10-26 22:55:58,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:55:58,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-26 22:55:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:55:58,695 INFO L225 Difference]: With dead ends: 33 [2018-10-26 22:55:58,695 INFO L226 Difference]: Without dead ends: 24 [2018-10-26 22:55:58,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:55:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-26 22:55:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-26 22:55:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-26 22:55:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-26 22:55:58,703 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2018-10-26 22:55:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:55:58,704 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-26 22:55:58,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:55:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-26 22:55:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 22:55:58,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:55:58,705 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:55:58,706 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:55:58,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:55:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1317949565, now seen corresponding path program 1 times [2018-10-26 22:55:58,707 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:55:58,707 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c5f1425-5a26-41be-bbfe-1fb7223a6267/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 [2018-10-26 22:55:58,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:56:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:56:04,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:56:26,712 WARN L179 SmtUtils]: Spent 10.37 s on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 22:56:29,103 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (and (= (fp.div RNE .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse3 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul RNE c_~_EPS~0 .cse5))) (let ((.cse2 (fp.lt .cse3 (fp.neg .cse4))) (.cse1 (fp.gt .cse3 .cse4))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))))) is different from false [2018-10-26 22:56:31,447 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (and (= (fp.div RNE .cse0 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (let ((.cse5 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse3 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse5)) (.cse4 (fp.mul RNE c_~_EPS~0 .cse5))) (let ((.cse2 (fp.lt .cse3 (fp.neg .cse4))) (.cse1 (fp.gt .cse3 .cse4))) (or (and (not .cse1) (not .cse2) (= (_ bv0 32) c_SqrtR_~cond~0)) (and (or .cse2 .cse1) (= (_ bv1 32) c_SqrtR_~cond~0)))))))) is different from true [2018-10-26 22:56:33,867 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse3)) (.cse2 ((_ to_fp 11 53) RNE 1.0))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2))))) is different from false [2018-10-26 22:56:35,962 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse3)) (.cse2 ((_ to_fp 11 53) RNE 1.0))) (and (not (fp.gt .cse0 .cse1)) (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2))))) is different from true [2018-10-26 22:56:38,764 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add RNE .cse3 .cse3))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 .cse3) |c_SqrtR_#res|) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1))))))) is different from false [2018-10-26 22:56:41,217 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse2 |c_SqrtR_#in~Input|))) (let ((.cse4 (fp.add RNE .cse3 .cse3))) (let ((.cse0 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse4)) (.cse1 (fp.mul RNE c_~_EPS~0 .cse4))) (and (not (fp.lt .cse0 (fp.neg .cse1))) (= (fp.div RNE .cse2 .cse3) |c_SqrtR_#res|) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse2)) (not (fp.gt .cse0 .cse1))))))) is different from true [2018-10-26 22:56:44,003 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (= |c_main_#t~ret2| (fp.div RNE .cse0 .cse1)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from false [2018-10-26 22:56:46,639 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (= |c_main_#t~ret2| (fp.div RNE .cse0 .cse1)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from true [2018-10-26 22:56:49,416 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from false [2018-10-26 22:56:52,081 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~d~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5)) (.cse3 (fp.mul RNE .cse4 .cse5))) (and (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse0)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.gt .cse2 .cse3)))))))) is different from true [2018-10-26 22:57:14,865 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse13 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse4 (fp.div RNE .cse3 v_prenex_5))) (let ((.cse5 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse6 (fp.add RNE .cse4 .cse4))) (let ((.cse1 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse5) .cse6)) (.cse2 (fp.mul RNE .cse5 .cse6)) (.cse0 (fp.div RNE .cse3 .cse4))) (and (fp.geq .cse0 ((_ to_fp 11 53) RNE (/ 3.0 10.0))) (fp.geq v_prenex_5 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse1 (fp.neg .cse2))) (not (fp.gt .cse1 .cse2)) (fp.leq .cse0 ((_ to_fp 11 53) RNE 5.0)) (not (fp.leq v_prenex_5 .cse3)) (fp.leq v_prenex_5 ((_ to_fp 11 53) RNE 20.0))))))))) (and (exists ((main_~d~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse8 (fp.div RNE .cse7 main_~d~0))) (let ((.cse11 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse12 (fp.add RNE .cse8 .cse8))) (let ((.cse9 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse11) .cse12)) (.cse10 (fp.mul RNE .cse11 .cse12))) (and (not (fp.leq (fp.div RNE .cse7 .cse8) ((_ to_fp 11 53) RNE 5.0))) (fp.leq main_~d~0 ((_ to_fp 11 53) RNE 20.0)) (not (fp.leq main_~d~0 .cse7)) (fp.geq main_~d~0 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.lt .cse9 (fp.neg .cse10))) (not (fp.gt .cse9 .cse10)))))))) .cse13) (and (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse17 (fp.div RNE .cse14 v_prenex_3))) (let ((.cse18 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse19 (fp.add RNE .cse17 .cse17))) (let ((.cse15 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse18) .cse19)) (.cse16 (fp.mul RNE .cse18 .cse19))) (and (not (fp.leq v_prenex_3 .cse14)) (not (fp.lt .cse15 (fp.neg .cse16))) (fp.leq v_prenex_3 ((_ to_fp 11 53) RNE 20.0)) (fp.geq v_prenex_3 ((_ to_fp 11 53) RNE (/ 1.0 10.0))) (not (fp.gt .cse15 .cse16)) (not (fp.geq (fp.div RNE .cse14 .cse17) ((_ to_fp 11 53) RNE (/ 3.0 10.0)))))))))) .cse13))) is different from false [2018-10-26 22:57:33,995 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-10-26 22:57:34,196 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 22:57:34,197 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-10-26 22:57:34,201 INFO L168 Benchmark]: Toolchain (without parser) took 125837.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -94.1 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:34,210 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:57:34,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.91 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:34,211 INFO L168 Benchmark]: Boogie Preprocessor took 54.45 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:34,212 INFO L168 Benchmark]: RCFGBuilder took 9256.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:34,213 INFO L168 Benchmark]: TraceAbstraction took 116201.24 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: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:57:34,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 320.91 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.45 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 9256.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 116201.24 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: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...