./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ........................................................................................................................................................................................................................................................................................ 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_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:44:20,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:44:20,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:44:20,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:44:20,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:44:20,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:44:20,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:44:20,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:44:20,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:44:20,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:44:20,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:44:20,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:44:20,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:44:20,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:44:20,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:44:20,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:44:20,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:44:20,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:44:20,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:44:20,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:44:20,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:44:20,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:44:20,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:44:20,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:44:20,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:44:20,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:44:20,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:44:20,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:44:20,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:44:20,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:44:20,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:44:20,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:44:20,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:44:20,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:44:20,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:44:20,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:44:20,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:44:20,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:44:20,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:44:20,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:44:20,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:44:20,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:44:20,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:44:20,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:44:20,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:44:20,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:44:20,908 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:44:20,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:44:20,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:44:20,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:44:20,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:44:20,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:44:20,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:44:20,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:44:20,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:44:20,910 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:44:20,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:44:20,910 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:44:20,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:44:20,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:44:20,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:44:20,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:44:20,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:44:20,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:44:20,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:44:20,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:44:20,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:44:20,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:44:20,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:44:20,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:44:20,913 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_173aa717-84d3-4297-9be2-48a442c6183d/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-16 00:44:20,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:44:20,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:44:20,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:44:20,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:44:20,955 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:44:20,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-16 00:44:21,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/504f1da14/86caabc690924820a09ca8d46349fe52/FLAGdff7e7d1c [2019-11-16 00:44:21,428 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:44:21,434 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-16 00:44:21,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/504f1da14/86caabc690924820a09ca8d46349fe52/FLAGdff7e7d1c [2019-11-16 00:44:21,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/504f1da14/86caabc690924820a09ca8d46349fe52 [2019-11-16 00:44:21,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:44:21,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:44:21,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:44:21,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:44:21,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:44:21,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:21" (1/1) ... [2019-11-16 00:44:21,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544cb9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:21, skipping insertion in model container [2019-11-16 00:44:21,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:21" (1/1) ... [2019-11-16 00:44:21,874 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:44:21,894 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:44:22,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:44:22,239 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:44:22,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:44:22,317 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:44:22,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22 WrapperNode [2019-11-16 00:44:22,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:44:22,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:44:22,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:44:22,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:44:22,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:44:22,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:44:22,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:44:22,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:44:22,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... [2019-11-16 00:44:22,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:44:22,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:44:22,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:44:22,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:44:22,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 [2019-11-16 00:44:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:44:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-16 00:44:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:44:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-16 00:44:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:44:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:44:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:44:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:44:23,012 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:44:23,012 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-16 00:44:23,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:23 BoogieIcfgContainer [2019-11-16 00:44:23,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:44:23,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:44:23,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:44:23,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:44:23,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:44:21" (1/3) ... [2019-11-16 00:44:23,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4f333b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:23, skipping insertion in model container [2019-11-16 00:44:23,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:22" (2/3) ... [2019-11-16 00:44:23,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4f333b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:23, skipping insertion in model container [2019-11-16 00:44:23,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:23" (3/3) ... [2019-11-16 00:44:23,021 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-16 00:44:23,028 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:44:23,034 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:44:23,043 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:44:23,064 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:44:23,065 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:44:23,065 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:44:23,065 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:44:23,065 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:44:23,065 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:44:23,065 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:44:23,065 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:44:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-16 00:44:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:44:23,085 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:23,086 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:23,087 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-16 00:44:23,099 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:44:23,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607290164] [2019-11-16 00:44:23,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:44:23,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:44:23,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:44:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:23,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607290164] [2019-11-16 00:44:23,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:23,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:44:23,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838316885] [2019-11-16 00:44:23,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-16 00:44:23,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:44:23,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-16 00:44:23,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-16 00:44:23,219 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-16 00:44:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:23,238 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-16 00:44:23,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-16 00:44:23,240 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-16 00:44:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:23,250 INFO L225 Difference]: With dead ends: 104 [2019-11-16 00:44:23,250 INFO L226 Difference]: Without dead ends: 50 [2019-11-16 00:44:23,253 INFO L600 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 [2019-11-16 00:44:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-16 00:44:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-16 00:44:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-16 00:44:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-16 00:44:23,289 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-16 00:44:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:23,289 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-16 00:44:23,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-16 00:44:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-16 00:44:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-16 00:44:23,290 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:23,290 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:23,290 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:23,290 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-16 00:44:23,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:44:23,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304276706] [2019-11-16 00:44:23,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:44:23,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:44:23,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:44:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:44:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:44:23,363 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:44:23,363 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:44:23,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:44:23 BoogieIcfgContainer [2019-11-16 00:44:23,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:44:23,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:44:23,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:44:23,390 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:44:23,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:23" (3/4) ... [2019-11-16 00:44:23,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-16 00:44:23,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:44:23,395 INFO L168 Benchmark]: Toolchain (without parser) took 1544.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -109.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:23,396 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:44:23,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:23,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.79 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:23,397 INFO L168 Benchmark]: Boogie Preprocessor took 71.13 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. [2019-11-16 00:44:23,398 INFO L168 Benchmark]: RCFGBuilder took 539.02 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:23,399 INFO L168 Benchmark]: TraceAbstraction took 374.96 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:23,399 INFO L168 Benchmark]: Witness Printer took 3.60 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. [2019-11-16 00:44:23,402 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 467.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 84.79 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.13 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 539.02 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 374.96 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.60 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: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 153, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L149] double x = 0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 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=53occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.24-cad4683 [2019-11-16 00:44:25,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:44:25,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:44:25,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:44:25,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:44:25,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:44:25,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:44:25,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:44:25,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:44:25,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:44:25,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:44:25,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:44:25,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:44:25,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:44:25,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:44:25,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:44:25,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:44:25,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:44:25,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:44:25,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:44:25,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:44:25,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:44:25,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:44:25,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:44:25,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:44:25,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:44:25,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:44:25,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:44:25,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:44:25,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:44:25,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:44:25,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:44:25,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:44:25,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:44:25,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:44:25,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:44:25,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:44:25,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:44:25,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:44:25,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:44:25,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:44:25,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-16 00:44:25,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:44:25,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:44:25,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:44:25,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:44:25,845 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:44:25,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:44:25,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-16 00:44:25,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-16 00:44:25,847 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:44:25,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:44:25,847 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:44:25,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:44:25,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:44:25,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:44:25,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:44:25,849 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-16 00:44:25,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-16 00:44:25,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:44:25,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-16 00:44:25,849 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_173aa717-84d3-4297-9be2-48a442c6183d/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-16 00:44:25,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:44:25,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:44:25,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:44:25,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:44:25,892 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:44:25,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-16 00:44:25,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/e03d984e8/7b1c15c0af34403e8e8837f90116e029/FLAGe92644661 [2019-11-16 00:44:26,341 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:44:26,342 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-16 00:44:26,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/e03d984e8/7b1c15c0af34403e8e8837f90116e029/FLAGe92644661 [2019-11-16 00:44:26,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/data/e03d984e8/7b1c15c0af34403e8e8837f90116e029 [2019-11-16 00:44:26,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:44:26,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:44:26,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:44:26,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:44:26,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:44:26,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:26" (1/1) ... [2019-11-16 00:44:26,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a53413c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:26, skipping insertion in model container [2019-11-16 00:44:26,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:26" (1/1) ... [2019-11-16 00:44:26,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:44:26,782 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:44:26,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:44:26,992 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:44:27,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:44:27,169 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:44:27,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27 WrapperNode [2019-11-16 00:44:27,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:44:27,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:44:27,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:44:27,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:44:27,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:44:27,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:44:27,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:44:27,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:44:27,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... [2019-11-16 00:44:27,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:44:27,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:44:27,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:44:27,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:44:27,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 [2019-11-16 00:44:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-16 00:44:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-16 00:44:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:44:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-16 00:44:27,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:44:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:44:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-16 00:44:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:44:31,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:44:31,373 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-16 00:44:31,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:31 BoogieIcfgContainer [2019-11-16 00:44:31,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:44:31,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:44:31,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:44:31,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:44:31,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:44:26" (1/3) ... [2019-11-16 00:44:31,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba2d513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:31, skipping insertion in model container [2019-11-16 00:44:31,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:27" (2/3) ... [2019-11-16 00:44:31,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba2d513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:31, skipping insertion in model container [2019-11-16 00:44:31,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:31" (3/3) ... [2019-11-16 00:44:31,381 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-16 00:44:31,394 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:44:31,402 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:44:31,409 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:44:31,428 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:44:31,428 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:44:31,428 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:44:31,428 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:44:31,428 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:44:31,428 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:44:31,428 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:44:31,428 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:44:31,440 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-16 00:44:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:44:31,446 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:31,447 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:31,449 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-16 00:44:31,460 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:31,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69850158] [2019-11-16 00:44:31,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 [2019-11-16 00:44:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:31,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-16 00:44:31,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:31,899 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:31,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69850158] [2019-11-16 00:44:31,903 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:31,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-16 00:44:31,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595342962] [2019-11-16 00:44:31,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-16 00:44:31,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-16 00:44:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-16 00:44:31,918 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-16 00:44:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:31,943 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-16 00:44:31,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-16 00:44:31,944 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-16 00:44:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:31,955 INFO L225 Difference]: With dead ends: 104 [2019-11-16 00:44:31,955 INFO L226 Difference]: Without dead ends: 50 [2019-11-16 00:44:31,958 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-16 00:44:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-16 00:44:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-16 00:44:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-16 00:44:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-16 00:44:32,004 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-16 00:44:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:32,005 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-16 00:44:32,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-16 00:44:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-16 00:44:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-16 00:44:32,007 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:32,007 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:32,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-16 00:44:32,222 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-16 00:44:32,227 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:32,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053458204] [2019-11-16 00:44:32,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/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 [2019-11-16 00:44:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:32,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:44:32,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:32,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:32,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053458204] [2019-11-16 00:44:32,756 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:32,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-16 00:44:32,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284104680] [2019-11-16 00:44:32,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:44:32,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:44:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:44:32,758 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-11-16 00:44:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:34,015 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2019-11-16 00:44:34,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:44:34,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-16 00:44:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:34,017 INFO L225 Difference]: With dead ends: 105 [2019-11-16 00:44:34,017 INFO L226 Difference]: Without dead ends: 63 [2019-11-16 00:44:34,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:44:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-16 00:44:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2019-11-16 00:44:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-16 00:44:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2019-11-16 00:44:34,027 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2019-11-16 00:44:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:34,028 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2019-11-16 00:44:34,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:44:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2019-11-16 00:44:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-16 00:44:34,029 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:34,029 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:34,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-16 00:44:34,249 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-11-16 00:44:34,250 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:34,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938492320] [2019-11-16 00:44:34,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:34,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:44:34,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:34,382 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:34,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:44:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:34,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938492320] [2019-11-16 00:44:34,427 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:34,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-16 00:44:34,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496526067] [2019-11-16 00:44:34,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:44:34,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:34,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:44:34,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:44:34,428 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2019-11-16 00:44:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:34,566 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-16 00:44:34,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:44:34,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-16 00:44:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:34,570 INFO L225 Difference]: With dead ends: 63 [2019-11-16 00:44:34,570 INFO L226 Difference]: Without dead ends: 60 [2019-11-16 00:44:34,571 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:44:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-16 00:44:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-11-16 00:44:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-16 00:44:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2019-11-16 00:44:34,578 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2019-11-16 00:44:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:34,578 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2019-11-16 00:44:34,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:44:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2019-11-16 00:44:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-16 00:44:34,579 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:34,579 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:34,780 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-16 00:44:34,780 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2019-11-16 00:44:34,781 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:34,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420323488] [2019-11-16 00:44:34,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:34,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:44:34,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:35,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:44:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:35,054 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:35,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:44:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:35,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420323488] [2019-11-16 00:44:35,342 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:35,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2019-11-16 00:44:35,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470744128] [2019-11-16 00:44:35,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-16 00:44:35,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-16 00:44:35,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:44:35,344 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2019-11-16 00:44:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:35,766 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2019-11-16 00:44:35,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:44:35,767 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2019-11-16 00:44:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:35,768 INFO L225 Difference]: With dead ends: 60 [2019-11-16 00:44:35,768 INFO L226 Difference]: Without dead ends: 51 [2019-11-16 00:44:35,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:44:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-16 00:44:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-16 00:44:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-16 00:44:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2019-11-16 00:44:35,775 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2019-11-16 00:44:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:35,775 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2019-11-16 00:44:35,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-16 00:44:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2019-11-16 00:44:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-16 00:44:35,776 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:35,776 INFO L380 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, 1, 1, 1, 1, 1] [2019-11-16 00:44:35,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-16 00:44:35,977 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:35,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2019-11-16 00:44:35,978 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:35,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897595206] [2019-11-16 00:44:35,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:36,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:44:36,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:36,111 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:44:36,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897595206] [2019-11-16 00:44:36,183 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:36,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-16 00:44:36,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861300399] [2019-11-16 00:44:36,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:44:36,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:44:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:44:36,185 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2019-11-16 00:44:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:36,706 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2019-11-16 00:44:36,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:44:36,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-16 00:44:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:36,709 INFO L225 Difference]: With dead ends: 87 [2019-11-16 00:44:36,709 INFO L226 Difference]: Without dead ends: 52 [2019-11-16 00:44:36,710 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:44:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-16 00:44:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-16 00:44:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-16 00:44:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-11-16 00:44:36,716 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2019-11-16 00:44:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:36,716 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-11-16 00:44:36,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:44:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-11-16 00:44:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-16 00:44:36,718 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:36,718 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:36,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-16 00:44:36,939 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2019-11-16 00:44:36,940 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:36,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594858208] [2019-11-16 00:44:36,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:37,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:44:37,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:44:37,057 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:44:37,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594858208] [2019-11-16 00:44:37,065 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:37,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-16 00:44:37,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047729540] [2019-11-16 00:44:37,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:44:37,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:44:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:44:37,066 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2019-11-16 00:44:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:37,111 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-16 00:44:37,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:44:37,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-16 00:44:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:37,113 INFO L225 Difference]: With dead ends: 84 [2019-11-16 00:44:37,113 INFO L226 Difference]: Without dead ends: 55 [2019-11-16 00:44:37,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:44:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-16 00:44:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-16 00:44:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-16 00:44:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2019-11-16 00:44:37,119 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2019-11-16 00:44:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:37,120 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2019-11-16 00:44:37,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:44:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2019-11-16 00:44:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-16 00:44:37,121 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:37,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:37,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-16 00:44:37,322 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2019-11-16 00:44:37,323 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:37,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880144320] [2019-11-16 00:44:37,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:37,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:44:37,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:44:37,458 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:44:37,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880144320] [2019-11-16 00:44:37,508 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:44:37,508 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-16 00:44:37,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978159] [2019-11-16 00:44:37,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:44:37,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:37,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:44:37,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:44:37,510 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 8 states. [2019-11-16 00:44:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:37,620 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2019-11-16 00:44:37,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:44:37,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-16 00:44:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:37,622 INFO L225 Difference]: With dead ends: 96 [2019-11-16 00:44:37,622 INFO L226 Difference]: Without dead ends: 67 [2019-11-16 00:44:37,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:44:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-16 00:44:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-11-16 00:44:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-16 00:44:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2019-11-16 00:44:37,629 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2019-11-16 00:44:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:37,629 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2019-11-16 00:44:37,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:44:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2019-11-16 00:44:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-16 00:44:37,631 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:37,631 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:37,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-16 00:44:37,832 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2019-11-16 00:44:37,833 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:37,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382378026] [2019-11-16 00:44:37,833 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:37,932 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-16 00:44:37,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:44:37,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-16 00:44:37,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-16 00:44:37,959 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-16 00:44:37,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382378026] [2019-11-16 00:44:37,998 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:44:37,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-16 00:44:37,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065566619] [2019-11-16 00:44:37,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:44:37,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:44:37,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:44:37,999 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2019-11-16 00:44:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:38,087 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2019-11-16 00:44:38,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:44:38,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2019-11-16 00:44:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:38,089 INFO L225 Difference]: With dead ends: 96 [2019-11-16 00:44:38,089 INFO L226 Difference]: Without dead ends: 75 [2019-11-16 00:44:38,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:44:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-16 00:44:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-11-16 00:44:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-16 00:44:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-11-16 00:44:38,098 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2019-11-16 00:44:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:38,098 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-11-16 00:44:38,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:44:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-11-16 00:44:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-16 00:44:38,101 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:38,101 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:38,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-16 00:44:38,305 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2019-11-16 00:44:38,306 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:38,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346883339] [2019-11-16 00:44:38,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:44:38,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:44:38,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-16 00:44:38,519 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-16 00:44:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-16 00:44:38,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346883339] [2019-11-16 00:44:38,628 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:44:38,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-16 00:44:38,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570881095] [2019-11-16 00:44:38,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-16 00:44:38,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-16 00:44:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-16 00:44:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:44:38,630 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 16 states. [2019-11-16 00:44:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:44:38,951 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2019-11-16 00:44:38,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:44:38,951 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2019-11-16 00:44:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:44:38,952 INFO L225 Difference]: With dead ends: 136 [2019-11-16 00:44:38,953 INFO L226 Difference]: Without dead ends: 99 [2019-11-16 00:44:38,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:44:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-16 00:44:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2019-11-16 00:44:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-16 00:44:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2019-11-16 00:44:38,963 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2019-11-16 00:44:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:44:38,964 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2019-11-16 00:44:38,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-16 00:44:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2019-11-16 00:44:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-16 00:44:38,967 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:44:38,967 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:44:39,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-16 00:44:39,181 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:44:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:44:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 2 times [2019-11-16 00:44:39,182 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-16 00:44:39,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432536502] [2019-11-16 00:44:39,182 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_173aa717-84d3-4297-9be2-48a442c6183d/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-11-16 00:44:39,309 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-16 00:44:39,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:44:39,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:44:39,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:44:39,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-11-16 00:44:39,555 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) 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:292) 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.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-11-16 00:44:39,561 INFO L168 Benchmark]: Toolchain (without parser) took 12818.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -107.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:39,561 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:44:39,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:39,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:44:39,563 INFO L168 Benchmark]: Boogie Preprocessor took 66.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:39,563 INFO L168 Benchmark]: RCFGBuilder took 4087.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:39,564 INFO L168 Benchmark]: TraceAbstraction took 8183.73 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:44:39,567 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 427.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4087.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8183.73 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...