./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_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_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/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 71bb07c94f4fe427420ff52287a2ed237302fad2 .......................................................................................................................................................................................................................................................................................................... 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_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/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 71bb07c94f4fe427420ff52287a2ed237302fad2 ........................................................................................................................................................................................................................................................................................................................................................ 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 22:16:33,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:16:33,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:16:33,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:16:33,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:16:33,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:16:33,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:16:33,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:16:33,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:16:33,920 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:16:33,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:16:33,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:16:33,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:16:33,927 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:16:33,935 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:16:33,935 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:16:33,936 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:16:33,939 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:16:33,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:16:33,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:16:33,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:16:33,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:16:33,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:16:33,953 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:16:33,954 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:16:33,955 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:16:33,955 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:16:33,956 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:16:33,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:16:33,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:16:33,959 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:16:33,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:16:33,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:16:33,960 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:16:33,961 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:16:33,962 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:16:33,962 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:16:33,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:16:33,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:16:33,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:16:33,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:16:33,980 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:16:33,981 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:16:33,981 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:16:33,982 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:16:33,982 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:16:33,982 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:16:33,982 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:16:33,982 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:16:33,982 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:16:33,983 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:16:33,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:16:33,983 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:16:33,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:16:33,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:16:33,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:16:33,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:16:33,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:16:33,984 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:16:33,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:16:33,984 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:16:33,984 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:16:33,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:16:33,985 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:16:33,985 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:16:33,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:16:33,985 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_189ed4b0-caa1-4fc5-be63-567c991fd839/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 -> 71bb07c94f4fe427420ff52287a2ed237302fad2 [2018-10-26 22:16:34,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:16:34,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:16:34,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:16:34,060 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:16:34,060 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:16:34,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:34,125 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/b82c18ecf/491e4da2e8d74111b84b4783f2559351/FLAG5c97035e7 [2018-10-26 22:16:34,519 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:16:34,520 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:34,527 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/b82c18ecf/491e4da2e8d74111b84b4783f2559351/FLAG5c97035e7 [2018-10-26 22:16:34,540 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/b82c18ecf/491e4da2e8d74111b84b4783f2559351 [2018-10-26 22:16:34,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:16:34,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:16:34,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:34,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:16:34,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:16:34,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c97d031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34, skipping insertion in model container [2018-10-26 22:16:34,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:16:34,588 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:16:34,737 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:34,741 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:16:34,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:34,778 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:16:34,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34 WrapperNode [2018-10-26 22:16:34,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:34,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:16:34,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:16:34,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:16:34,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... [2018-10-26 22:16:34,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:16:34,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:16:34,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:16:34,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:16:34,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/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 22:16:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:16:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:16:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:16:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:16:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:16:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:16:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-10-26 22:16:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:16:34,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:16:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:16:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:16:34,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:16:34,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:16:35,458 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:16:35,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:35 BoogieIcfgContainer [2018-10-26 22:16:35,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:16:35,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:16:35,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:16:35,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:16:35,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:16:34" (1/3) ... [2018-10-26 22:16:35,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70580ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:35, skipping insertion in model container [2018-10-26 22:16:35,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:34" (2/3) ... [2018-10-26 22:16:35,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70580ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:35, skipping insertion in model container [2018-10-26 22:16:35,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:35" (3/3) ... [2018-10-26 22:16:35,469 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:35,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:16:35,489 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:16:35,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:16:35,558 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:16:35,559 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:16:35,559 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:16:35,559 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:16:35,559 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:16:35,559 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:16:35,560 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:16:35,560 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:16:35,560 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:16:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-26 22:16:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 22:16:35,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:35,590 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:35,593 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:35,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:35,599 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-10-26 22:16:35,602 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:35,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:35,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:35,756 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 22:16:35,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:35,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:16:35,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:16:35,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:16:35,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:16:35,778 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-26 22:16:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:35,802 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-10-26 22:16:35,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:16:35,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 22:16:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:35,814 INFO L225 Difference]: With dead ends: 56 [2018-10-26 22:16:35,814 INFO L226 Difference]: Without dead ends: 26 [2018-10-26 22:16:35,818 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 22:16:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-26 22:16:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-26 22:16:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-26 22:16:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-26 22:16:35,857 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-10-26 22:16:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:35,857 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-26 22:16:35,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:16:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-26 22:16:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 22:16:35,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:35,858 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:35,859 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:35,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-10-26 22:16:35,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:35,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:35,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:35,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:16:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:16:35,906 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:16:35,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:16:35 BoogieIcfgContainer [2018-10-26 22:16:35,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:16:35,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:16:35,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:16:35,935 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:16:35,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:35" (3/4) ... [2018-10-26 22:16:35,939 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:16:35,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:16:35,941 INFO L168 Benchmark]: Toolchain (without parser) took 1396.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:16:35,942 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:16:35,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.73 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:16:35,944 INFO L168 Benchmark]: Boogie Preprocessor took 33.34 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:16:35,944 INFO L168 Benchmark]: RCFGBuilder took 645.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 942.3 MB in the beginning and 1.2 GB in the end (delta: -218.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:16:35,945 INFO L168 Benchmark]: TraceAbstraction took 472.38 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:16:35,946 INFO L168 Benchmark]: Witness Printer took 5.32 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 22:16:35,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.73 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.34 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 645.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 942.3 MB in the beginning and 1.2 GB in the end (delta: -218.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 472.38 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.32 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33. Possible FailurePath: [L10] double _EPS = 1e-6; VAL [\old(_EPS)=3, _EPS=1/1000000] [L38] double d, dd, r; [L39] double epsilon = 1e-8; [L41] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L41] COND TRUE d <= 20. [L43] dd = __VERIFIER_nondet_double() [L46] CALL, EXPR SqrtR(dd) VAL [\old(Input)=2, _EPS=1/1000000] [L14] double xn, xnp1, residu, lsup, linf; [L15] int i, cond; VAL [\old(Input)=2, _EPS=1/1000000, Input=2] [L16] COND TRUE Input <= 1.0 [L16] xn = 1.0 VAL [\old(Input)=2, _EPS=1/1000000, Input=2, xn=1] [L17] xnp1 = xn [L18] residu = 2.0*_EPS*(xn+xnp1) [L19] lsup = _EPS * (xn+xnp1) [L20] linf = -lsup [L21] cond = ((residu > lsup) || (residu < linf)) [L22] i = 0 VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L23] COND FALSE !(\read(cond)) VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L33] RET return 1.0 / xnp1; VAL [\old(Input)=2, _EPS=1/1000000, cond=0, i=0, Input=2, xn=1, xn=1] [L46] EXPR SqrtR(dd) VAL [_EPS=1/1000000, d=1, d=2, epsilon=1/100000000, SqrtR(dd)=4] [L46] r = SqrtR(dd) [L48] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) VAL [\old(cond)=0, _EPS=1/1000000] [L8] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:16:38,158 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:16:38,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:16:38,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:16:38,179 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:16:38,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:16:38,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:16:38,184 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:16:38,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:16:38,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:16:38,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:16:38,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:16:38,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:16:38,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:16:38,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:16:38,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:16:38,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:16:38,200 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:16:38,202 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:16:38,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:16:38,204 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:16:38,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:16:38,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:16:38,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:16:38,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:16:38,220 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:16:38,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:16:38,221 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:16:38,222 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:16:38,223 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:16:38,223 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:16:38,224 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:16:38,224 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:16:38,224 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:16:38,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:16:38,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:16:38,228 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 22:16:38,247 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:16:38,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:16:38,249 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:16:38,250 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:16:38,251 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:16:38,252 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:16:38,252 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:16:38,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:16:38,252 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:16:38,252 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:16:38,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:16:38,253 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:16:38,254 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:16:38,254 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:16:38,254 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:16:38,254 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:16:38,254 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:16:38,254 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:16:38,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:16:38,255 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:16:38,255 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:16:38,255 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:16:38,255 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 22:16:38,256 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:16:38,256 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:16:38,256 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:16:38,256 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_189ed4b0-caa1-4fc5-be63-567c991fd839/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 -> 71bb07c94f4fe427420ff52287a2ed237302fad2 [2018-10-26 22:16:38,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:16:38,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:16:38,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:16:38,336 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:16:38,336 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:16:38,337 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:38,390 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/c7b9cec6d/55f4ef05c7ee49f4a54888b944d73716/FLAGc9d328877 [2018-10-26 22:16:38,814 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:16:38,822 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:38,831 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/c7b9cec6d/55f4ef05c7ee49f4a54888b944d73716/FLAGc9d328877 [2018-10-26 22:16:38,854 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/data/c7b9cec6d/55f4ef05c7ee49f4a54888b944d73716 [2018-10-26 22:16:38,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:16:38,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:16:38,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:38,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:16:38,870 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:16:38,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:38" (1/1) ... [2018-10-26 22:16:38,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432df49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:38, skipping insertion in model container [2018-10-26 22:16:38,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:38" (1/1) ... [2018-10-26 22:16:38,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:16:38,904 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:16:39,068 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:39,074 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:16:39,100 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:39,114 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:16:39,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39 WrapperNode [2018-10-26 22:16:39,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:39,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:16:39,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:16:39,116 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:16:39,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... [2018-10-26 22:16:39,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:16:39,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:16:39,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:16:39,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:16:39,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/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 22:16:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:16:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:16:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:16:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2018-10-26 22:16:39,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:16:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:16:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:16:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:16:48,317 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:16:48,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:48 BoogieIcfgContainer [2018-10-26 22:16:48,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:16:48,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:16:48,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:16:48,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:16:48,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:16:38" (1/3) ... [2018-10-26 22:16:48,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4e366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:48, skipping insertion in model container [2018-10-26 22:16:48,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:39" (2/3) ... [2018-10-26 22:16:48,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff4e366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:48, skipping insertion in model container [2018-10-26 22:16:48,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:48" (3/3) ... [2018-10-26 22:16:48,327 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant_true-unreach-call.c [2018-10-26 22:16:48,335 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:16:48,341 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:16:48,353 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:16:48,382 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:16:48,383 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:16:48,383 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:16:48,383 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:16:48,383 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:16:48,384 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:16:48,384 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:16:48,384 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:16:48,385 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:16:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-26 22:16:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 22:16:48,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:48,408 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:48,410 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:48,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash 924932034, now seen corresponding path program 1 times [2018-10-26 22:16:48,419 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:16:48,420 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 22:16:48,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:50,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:50,099 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 22:16:50,099 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:16:50,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:50,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:16:50,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:16:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:16:50,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:16:50,147 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-26 22:16:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:50,169 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-10-26 22:16:50,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:16:50,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 22:16:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:50,179 INFO L225 Difference]: With dead ends: 56 [2018-10-26 22:16:50,179 INFO L226 Difference]: Without dead ends: 26 [2018-10-26 22:16:50,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:16:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-26 22:16:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-26 22:16:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-26 22:16:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-26 22:16:50,220 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2018-10-26 22:16:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:50,221 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-26 22:16:50,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:16:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-26 22:16:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 22:16:50,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:50,223 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:50,223 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:50,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash 244023785, now seen corresponding path program 1 times [2018-10-26 22:16:50,224 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:16:50,224 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:16:50,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 22:16:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:51,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:17:01,505 WARN L179 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 31 DAG size of output: 9 [2018-10-26 22:17:01,510 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 22:17:01,511 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:17:01,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:17:01,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:17:01,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:17:01,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:17:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:17:01,543 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2018-10-26 22:17:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:08,288 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-10-26 22:17:08,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:17:08,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-10-26 22:17:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:08,291 INFO L225 Difference]: With dead ends: 49 [2018-10-26 22:17:08,291 INFO L226 Difference]: Without dead ends: 29 [2018-10-26 22:17:08,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:17:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-26 22:17:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-26 22:17:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-26 22:17:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-26 22:17:08,297 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-10-26 22:17:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:08,299 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-26 22:17:08,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:17:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-26 22:17:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 22:17:08,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:17:08,302 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:17:08,302 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:17:08,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:17:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash 502189223, now seen corresponding path program 1 times [2018-10-26 22:17:08,303 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:17:08,303 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_189ed4b0-caa1-4fc5-be63-567c991fd839/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:17:08,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 22:17:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:17:12,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:17:12,898 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 22:17:42,801 WARN L179 SmtUtils]: Spent 12.33 s on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 22:17:45,240 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (= (_ bv1 32) c_SqrtR_~cond~0)) (.cse4 (let ((.cse6 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse6) (fp.mul RNE c_~_EPS~0 .cse6)))) (.cse0 (= (fp.div RNE .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0)) (.cse1 (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0)) (.cse2 (not (fp.leq |c_SqrtR_#in~Input| .cse5)))) (or (and .cse0 .cse1 (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) v_prenex_2)) .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (not .cse4) .cse0 (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= (_ bv0 32) c_SqrtR_~cond~0) .cse1 .cse2)))) is different from false [2018-10-26 22:17:47,329 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (= (_ bv1 32) c_SqrtR_~cond~0)) (.cse4 (let ((.cse6 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse6) (fp.mul RNE c_~_EPS~0 .cse6)))) (.cse0 (= (fp.div RNE .cse5 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0)) (.cse1 (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0)) (.cse2 (not (fp.leq |c_SqrtR_#in~Input| .cse5)))) (or (and .cse0 .cse1 (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) v_prenex_2)) .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (not .cse4) .cse0 (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= (_ bv0 32) c_SqrtR_~cond~0) .cse1 .cse2)))) is different from true [2018-10-26 22:17:49,751 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (not (let ((.cse0 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse0) (fp.mul RNE c_~_EPS~0 .cse0)))) (= (fp.div RNE .cse1 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse1)))) is different from false [2018-10-26 22:17:51,837 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (and (not (let ((.cse0 (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse0) (fp.mul RNE c_~_EPS~0 .cse0)))) (= (fp.div RNE .cse1 |c_SqrtR_#in~Input|) c_SqrtR_~xnp1~0) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (fp.add RNE c_SqrtR_~xnp1~0 c_SqrtR_~xnp1~0)) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse1)))) is different from true [2018-10-26 22:17:54,598 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 |c_SqrtR_#in~Input|))) (and (= (fp.div RNE .cse0 .cse1) |c_SqrtR_#res|) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (let ((.cse2 (fp.div RNE ((_ to_fp 11 53) RNE 1.0) |c_SqrtR_#in~Input|))) (fp.add RNE .cse2 .cse2))) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (not (let ((.cse3 (fp.add RNE .cse1 .cse1))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3) (fp.mul RNE c_~_EPS~0 .cse3))))))) is different from false [2018-10-26 22:17:57,039 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 |c_SqrtR_#in~Input|))) (and (= (fp.div RNE .cse0 .cse1) |c_SqrtR_#res|) (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) (let ((.cse2 (fp.div RNE ((_ to_fp 11 53) RNE 1.0) |c_SqrtR_#in~Input|))) (fp.add RNE .cse2 .cse2))) SqrtR_~linf~0))) (= ((_ to_fp 11 53) RNE (/ 1.0 1000000.0)) c_~_EPS~0) (not (fp.leq |c_SqrtR_#in~Input| .cse0)) (not (let ((.cse3 (fp.add RNE .cse1 .cse1))) (fp.gt (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) c_~_EPS~0) .cse3) (fp.mul RNE c_~_EPS~0 .cse3))))))) is different from true [2018-10-26 22:17:59,804 WARN L832 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse3 .cse3))) (let ((.cse2 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse1 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (not (fp.lt .cse1 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse2)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse2)) (= |c_main_#t~ret3| (fp.div RNE .cse0 .cse3)) (not (fp.gt .cse1 (fp.mul RNE .cse4 .cse5))))))))) is different from false [2018-10-26 22:18:02,424 WARN L854 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse3 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse3 .cse3))) (let ((.cse2 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse1 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (not (fp.lt .cse1 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse2)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse2)) (= |c_main_#t~ret3| (fp.div RNE .cse0 .cse3)) (not (fp.gt .cse1 (fp.mul RNE .cse4 .cse5))))))))) is different from true [2018-10-26 22:18:05,202 WARN L832 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse3)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse3)) (not (fp.gt .cse2 (fp.mul RNE .cse4 .cse5))))))))) is different from false [2018-10-26 22:18:07,832 WARN L854 $PredicateComparison]: unable to prove that (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse1 (fp.div RNE .cse0 main_~dd~0))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse5 (fp.add RNE .cse1 .cse1))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse2 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse4) .cse5))) (and (not (fp.leq main_~dd~0 .cse0)) (= (fp.div RNE .cse0 .cse1) c_main_~r~0) (not (fp.lt .cse2 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse0 .cse3)) (fp.leq main_~dd~0 (fp.add RNE .cse0 .cse3)) (not (fp.gt .cse2 (fp.mul RNE .cse4 .cse5))))))))) is different from true [2018-10-26 22:18:30,293 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (and .cse0 (exists ((SqrtR_~linf~0 (_ FloatingPoint 11 53)) (main_~dd~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse2 (fp.div RNE .cse1 main_~dd~0))) (let ((.cse5 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse6 (fp.add RNE .cse2 .cse2))) (let ((.cse4 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse3 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse5) .cse6))) (and (not (fp.leq (fp.div RNE .cse1 .cse2) ((_ to_fp 11 53) RNE 5.0))) (not (fp.leq main_~dd~0 .cse1)) (not (fp.lt .cse3 SqrtR_~linf~0)) (fp.geq main_~dd~0 (fp.sub RNE .cse1 .cse4)) (fp.leq main_~dd~0 (fp.add RNE .cse1 .cse4)) (not (fp.gt .cse3 (fp.mul RNE .cse5 .cse6)))))))))) (and (exists ((v_prenex_4 (_ FloatingPoint 11 53)) (v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse8 (fp.div RNE .cse7 v_prenex_4))) (let ((.cse11 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse12 (fp.add RNE .cse8 .cse8))) (let ((.cse9 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse10 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse11) .cse12))) (and (not (fp.geq (fp.div RNE .cse7 .cse8) ((_ to_fp 11 53) RNE (/ 9.0 10.0)))) (fp.geq v_prenex_4 (fp.sub RNE .cse7 .cse9)) (not (fp.gt .cse10 (fp.mul RNE .cse11 .cse12))) (fp.leq v_prenex_4 (fp.add RNE .cse7 .cse9)) (not (fp.lt .cse10 v_prenex_3)) (not (fp.leq v_prenex_4 .cse7)))))))) .cse0) (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_6 (_ FloatingPoint 11 53)) (v_prenex_7 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) RNE 1.0))) (let ((.cse19 (fp.div RNE .cse14 v_prenex_7))) (let ((.cse17 ((_ to_fp 11 53) RNE (/ 1.0 1000000.0))) (.cse18 (fp.add RNE .cse19 .cse19))) (let ((.cse16 (fp.mul RNE (fp.mul RNE ((_ to_fp 11 53) RNE 2.0) .cse17) .cse18)) (.cse15 ((_ to_fp 11 53) RNE (/ 1.0 100000000.0))) (.cse13 (fp.div RNE .cse14 .cse19))) (and (fp.leq .cse13 ((_ to_fp 11 53) RNE 5.0)) (not (fp.leq v_prenex_7 .cse14)) (fp.leq v_prenex_7 (fp.add RNE .cse14 .cse15)) (not (fp.lt .cse16 v_prenex_6)) (not (fp.gt .cse16 (fp.mul RNE .cse17 .cse18))) (fp.geq v_prenex_7 (fp.sub RNE .cse14 .cse15)) (fp.geq .cse13 ((_ to_fp 11 53) RNE (/ 9.0 10.0)))))))))))) is different from false [2018-10-26 22:18:49,335 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-10-26 22:18:49,536 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 22:18:49,537 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 22:18:49,541 INFO L168 Benchmark]: Toolchain (without parser) took 130681.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -113.6 MB). Peak memory consumption was 60.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:49,550 INFO L168 Benchmark]: CDTParser took 0.59 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 22:18:49,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.07 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:49,552 INFO L168 Benchmark]: Boogie Preprocessor took 38.97 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:18:49,552 INFO L168 Benchmark]: RCFGBuilder took 9162.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -210.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:49,553 INFO L168 Benchmark]: TraceAbstraction took 121221.87 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: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:18:49,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 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 254.07 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.97 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 9162.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -210.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 121221.87 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: 80.7 MB). Peak memory consumption was 80.7 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...