./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c -s /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:29:42,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:29:42,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:29:42,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:29:42,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:29:42,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:29:42,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:29:42,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:29:42,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:29:42,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:29:42,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:29:42,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:29:42,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:29:42,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:29:42,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:29:42,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:29:42,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:29:42,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:29:42,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:29:42,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:29:42,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:29:42,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:29:42,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:29:42,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:29:42,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:29:42,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:29:42,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:29:42,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:29:42,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:29:42,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:29:42,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:29:42,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:29:42,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:29:42,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:29:42,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:29:42,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:29:42,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:29:42,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:29:42,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:29:42,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:29:42,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:29:42,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 16:29:42,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:29:42,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:29:42,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:29:42,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:29:42,178 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:29:42,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:29:42,178 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:29:42,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:29:42,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:29:42,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:29:42,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:29:42,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:29:42,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:29:42,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:29:42,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:29:42,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:29:42,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:29:42,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:29:42,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:29:42,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:29:42,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:29:42,296 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:29:42,296 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:29:42,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2019-12-07 16:29:42,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/3b112acae/02292381d888426eb127be3536494009/FLAG8e27987c4 [2019-12-07 16:29:42,759 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:29:42,759 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2019-12-07 16:29:42,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/3b112acae/02292381d888426eb127be3536494009/FLAG8e27987c4 [2019-12-07 16:29:42,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/3b112acae/02292381d888426eb127be3536494009 [2019-12-07 16:29:42,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:29:42,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:29:42,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:29:42,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:29:42,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:29:42,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3260b9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42, skipping insertion in model container [2019-12-07 16:29:42,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:29:42,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:29:42,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:29:42,934 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:29:42,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:29:42,961 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:29:42,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42 WrapperNode [2019-12-07 16:29:42,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:29:42,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:29:42,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:29:42,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:29:42,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:29:42,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:29:42,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:29:42,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:29:42,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:42,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... [2019-12-07 16:29:43,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:29:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:29:43,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:29:43,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:29:43,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:29:43,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:29:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:29:43,148 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:29:43,148 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 16:29:43,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:43 BoogieIcfgContainer [2019-12-07 16:29:43,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:29:43,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:29:43,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:29:43,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:29:43,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:29:42" (1/3) ... [2019-12-07 16:29:43,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab1cf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:29:43, skipping insertion in model container [2019-12-07 16:29:43,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:42" (2/3) ... [2019-12-07 16:29:43,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab1cf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:29:43, skipping insertion in model container [2019-12-07 16:29:43,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:43" (3/3) ... [2019-12-07 16:29:43,153 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2019-12-07 16:29:43,159 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:29:43,163 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:29:43,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:29:43,184 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:29:43,185 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:29:43,185 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:29:43,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:29:43,185 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:29:43,185 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:29:43,185 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:29:43,185 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:29:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 16:29:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:29:43,197 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:29:43,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:29:43,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:29:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:29:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2019-12-07 16:29:43,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:29:43,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133242578] [2019-12-07 16:29:43,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:29:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:29:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:29:43,293 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:29:43,293 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:29:43,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:29:43 BoogieIcfgContainer [2019-12-07 16:29:43,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:29:43,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:29:43,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:29:43,309 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:29:43,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:43" (3/4) ... [2019-12-07 16:29:43,312 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:29:43,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:29:43,314 INFO L168 Benchmark]: Toolchain (without parser) took 538.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:29:43,314 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:29:43,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:29:43,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.80 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. [2019-12-07 16:29:43,315 INFO L168 Benchmark]: Boogie Preprocessor took 14.55 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. [2019-12-07 16:29:43,316 INFO L168 Benchmark]: RCFGBuilder took 148.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:29:43,316 INFO L168 Benchmark]: TraceAbstraction took 159.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:29:43,316 INFO L168 Benchmark]: Witness Printer took 2.83 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. [2019-12-07 16:29:43,318 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.80 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. * Boogie Preprocessor took 14.55 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. * RCFGBuilder took 148.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 159.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 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 51, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L17] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L44] double d, r; [L46] d = __VERIFIER_nondet_double() [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; VAL [_EPS=1/1000000] [L23] COND TRUE Input <= 1.0 [L23] xn = 1.0 VAL [_EPS=1/1000000] [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 [_EPS=1/1000000] [L30] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L39] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L49] r = SqrtR(d) [L15] COND TRUE !(cond) VAL [_EPS=1/1000000] [L15] __VERIFIER_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 16:29:44,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:29:44,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:29:44,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:29:44,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:29:44,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:29:44,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:29:44,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:29:44,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:29:44,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:29:44,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:29:44,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:29:44,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:29:44,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:29:44,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:29:44,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:29:44,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:29:44,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:29:44,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:29:44,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:29:44,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:29:44,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:29:44,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:29:44,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:29:44,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:29:44,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:29:44,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:29:44,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:29:44,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:29:44,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:29:44,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:29:44,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:29:44,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:29:44,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:29:44,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:29:44,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:29:44,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:29:44,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:29:44,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:29:44,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:29:44,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:29:44,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 16:29:44,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:29:44,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:29:44,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:29:44,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:29:44,735 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:29:44,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:29:44,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:29:44,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:29:44,737 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:29:44,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:29:44,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:29:44,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:29:44,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:29:44,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:29:44,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:29:44,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:29:44,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:29:44,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:29:44,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:29:44,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:29:44,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:29:44,739 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 16:29:44,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:29:44,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:29:44,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:29:44,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:29:44,740 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:29:44,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:29:44,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:29:44,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:29:44,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:29:44,921 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:29:44,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2019-12-07 16:29:44,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/02e5ca3c5/d8efbb5afe7d43bc8172a6db06fa4f88/FLAG8657c5507 [2019-12-07 16:29:45,280 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:29:45,281 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/sv-benchmarks/c/float-benchs/sqrt_Householder_interval.c [2019-12-07 16:29:45,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/02e5ca3c5/d8efbb5afe7d43bc8172a6db06fa4f88/FLAG8657c5507 [2019-12-07 16:29:45,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/data/02e5ca3c5/d8efbb5afe7d43bc8172a6db06fa4f88 [2019-12-07 16:29:45,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:29:45,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:29:45,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:29:45,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:29:45,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:29:45,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45, skipping insertion in model container [2019-12-07 16:29:45,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:29:45,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:29:45,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:29:45,429 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:29:45,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:29:45,453 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:29:45,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45 WrapperNode [2019-12-07 16:29:45,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:29:45,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:29:45,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:29:45,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:29:45,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:29:45,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:29:45,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:29:45,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:29:45,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... [2019-12-07 16:29:45,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:29:45,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:29:45,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:29:45,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:29:45,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:29:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:29:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:29:54,746 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:29:54,746 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 16:29:54,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:54 BoogieIcfgContainer [2019-12-07 16:29:54,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:29:54,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:29:54,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:29:54,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:29:54,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:29:45" (1/3) ... [2019-12-07 16:29:54,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5720f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:29:54, skipping insertion in model container [2019-12-07 16:29:54,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:29:45" (2/3) ... [2019-12-07 16:29:54,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5720f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:29:54, skipping insertion in model container [2019-12-07 16:29:54,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:54" (3/3) ... [2019-12-07 16:29:54,752 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2019-12-07 16:29:54,759 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:29:54,763 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:29:54,770 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:29:54,785 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:29:54,785 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:29:54,785 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:29:54,785 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:29:54,785 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:29:54,785 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:29:54,785 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:29:54,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:29:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 16:29:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:29:54,797 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:29:54,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:29:54,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:29:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:29:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2019-12-07 16:29:54,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:29:54,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740014284] [2019-12-07 16:29:54,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:29:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:29:56,119 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 16:29:56,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:29:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:29:56,208 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:29:58,326 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2019-12-07 16:30:00,427 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2019-12-07 16:30:06,588 WARN L192 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2019-12-07 16:30:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:30:06,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740014284] [2019-12-07 16:30:06,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:30:06,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 16:30:06,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719958180] [2019-12-07 16:30:06,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 16:30:06,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:30:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 16:30:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2019-12-07 16:30:06,605 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 8 states. [2019-12-07 16:30:08,751 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0) (= c_currentRoundingMode roundNearestTiesToEven) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))))) is different from false [2019-12-07 16:30:10,847 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0) (= c_currentRoundingMode roundNearestTiesToEven) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))))) is different from true [2019-12-07 16:30:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:30:21,026 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-12-07 16:30:21,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:30:21,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-12-07 16:30:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:30:21,080 INFO L225 Difference]: With dead ends: 25 [2019-12-07 16:30:21,080 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 16:30:21,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2019-12-07 16:30:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 16:30:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 16:30:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 16:30:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 16:30:21,104 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2019-12-07 16:30:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:30:21,104 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 16:30:21,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 16:30:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-12-07 16:30:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:30:21,104 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:30:21,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:30:21,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:30:21,306 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:30:21,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:30:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2019-12-07 16:30:21,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:30:21,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638784007] [2019-12-07 16:30:21,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/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 [2019-12-07 16:30:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:30:24,928 WARN L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 16:30:24,930 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:30:27,344 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))) is different from false [2019-12-07 16:30:29,782 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse5 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse6 (fp.mul c_currentRoundingMode .cse8 .cse9))) (let ((.cse1 (fp.gt .cse5 .cse6)) (.cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse7 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))) (.cse2 (fp.lt .cse5 (fp.neg .cse6))) (.cse4 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0)) (.cse3 (= c_currentRoundingMode roundNearestTiesToEven))) (or (and .cse0 (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0) (not .cse1) (not .cse2) .cse3) (and .cse0 .cse4 .cse1 .cse3) (and .cse0 .cse2 .cse4 .cse3))))) is different from false [2019-12-07 16:30:31,874 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse5 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse6 (fp.mul c_currentRoundingMode .cse8 .cse9))) (let ((.cse1 (fp.gt .cse5 .cse6)) (.cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse7 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))) (.cse2 (fp.lt .cse5 (fp.neg .cse6))) (.cse4 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0)) (.cse3 (= c_currentRoundingMode roundNearestTiesToEven))) (or (and .cse0 (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0) (not .cse1) (not .cse2) .cse3) (and .cse0 .cse4 .cse1 .cse3) (and .cse0 .cse2 .cse4 .cse3))))) is different from true [2019-12-07 16:30:34,256 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4)) (.cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (not (fp.gt .cse1 .cse2)) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2019-12-07 16:30:36,358 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4)) (.cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (= c_ULTIMATE.start_SqrtR_~xnp1~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0))))) (not (fp.gt .cse1 .cse2)) (not (fp.lt .cse1 (fp.neg .cse2))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2019-12-07 16:30:39,091 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (not (fp.gt .cse2 .cse3)) (not (fp.lt .cse2 (fp.neg .cse3))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2019-12-07 16:30:41,691 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5)) (.cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (and (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0))) (not (fp.gt .cse2 .cse3)) (not (fp.lt .cse2 (fp.neg .cse3))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) c_currentRoundingMode 20.0)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-12-07 16:30:41,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:30:44,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:31:04,975 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse1 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse5 (fp.add roundNearestTiesToEven .cse1 .cse1))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse4) .cse5)) (.cse3 (fp.mul roundNearestTiesToEven .cse4 .cse5))) (and (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse2 .cse3)) (not (fp.lt .cse2 (fp.neg .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse10 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse11 (fp.div roundNearestTiesToEven .cse10 ULTIMATE.start_SqrtR_~Input))) (let ((.cse12 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse13 (fp.add roundNearestTiesToEven .cse11 .cse11))) (let ((.cse8 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse12) .cse13)) (.cse9 (fp.mul roundNearestTiesToEven .cse12 .cse13)) (.cse7 (fp.div roundNearestTiesToEven .cse10 .cse11))) (and (fp.geq .cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse8 .cse9)) (not (fp.lt .cse8 (fp.neg .cse9))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse10)) (fp.leq .cse7 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse15 (fp.div roundNearestTiesToEven .cse14 ULTIMATE.start_SqrtR_~Input))) (let ((.cse18 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse19 (fp.add roundNearestTiesToEven .cse15 .cse15))) (let ((.cse16 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse18) .cse19)) (.cse17 (fp.mul roundNearestTiesToEven .cse18 .cse19))) (and (not (fp.geq (fp.div roundNearestTiesToEven .cse14 .cse15) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 10.0)))) (fp.leq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven 20.0)) (fp.geq ULTIMATE.start_SqrtR_~Input ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.gt .cse16 .cse17)) (not (fp.lt .cse16 (fp.neg .cse17))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)))))))) .cse6))) is different from false [2019-12-07 16:31:17,673 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 16:31:17,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638784007] [2019-12-07 16:31:17,675 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 16:31:17,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [898389391] [2019-12-07 16:31:17,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:31:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:23,339 WARN L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 16:31:23,340 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1629ee0a [2019-12-07 16:31:23,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404273757] [2019-12-07 16:31:23,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26724d98-d8c1-4ad9-b32e-ed6542a78688/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:33:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:33:17,588 WARN L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 16:33:17,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:33:17,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:33:17,606 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2019-12-07 16:33:17,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:33:17,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 16:33:17,607 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 16:33:17,607 INFO L475 BasicCegarLoop]: Counterexample might be feasible [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2019-12-07 16:33:18,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:33:18,226 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 16:33:18,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:33:18 BoogieIcfgContainer [2019-12-07 16:33:18,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:33:18,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:33:18,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:33:18,227 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:33:18,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:29:54" (3/4) ... [2019-12-07 16:33:18,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:33:18,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:33:18,232 INFO L168 Benchmark]: Toolchain (without parser) took 212935.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -58.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,233 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:33:18,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.52 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,234 INFO L168 Benchmark]: Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,235 INFO L168 Benchmark]: RCFGBuilder took 9220.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,235 INFO L168 Benchmark]: TraceAbstraction took 203478.83 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: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:33:18,235 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32 B). Peak memory consumption was 32 B. Max. memory is 11.5 GB. [2019-12-07 16:33:18,238 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.52 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 9220.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 203478.83 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: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32 B). Peak memory consumption was 32 B. 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] double _EPS = 1e-6; [L44] double d, r; [L46] d = __VERIFIER_nondet_double() [L21] double xn, xnp1, residu, lsup, linf; [L22] int i, cond; [L23] COND FALSE !(Input <= 1.0) [L23] xn = 1.0/Input [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 [L30] COND FALSE !(\read(cond)) [L39] return 1.0 / xnp1; [L49] r = SqrtR(d) [L15] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNKNOWN, OverallTime: 203.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 4 SDslu, 25 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 1 QuantifiedInterpolants, 1112 SizeOfPredicates, 8 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...