./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 064927d7c1e3d8158c8524deee46f65d988c7936 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:35:00,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:35:00,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:35:00,923 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:35:00,923 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:35:00,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:35:00,925 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:35:00,926 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:35:00,927 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:35:00,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:35:00,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:35:00,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:35:00,929 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:35:00,930 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:35:00,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:35:00,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:35:00,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:35:00,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:35:00,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:35:00,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:35:00,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:35:00,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:35:00,938 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:35:00,938 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:35:00,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:35:00,939 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:35:00,940 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:35:00,940 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:35:00,941 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:35:00,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:35:00,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:35:00,942 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:35:00,942 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:35:00,942 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:35:00,943 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:35:00,944 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:35:00,944 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:35:00,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:35:00,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:35:00,953 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:35:00,953 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:35:00,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:35:00,954 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:35:00,954 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:35:00,954 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:35:00,955 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:35:00,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:35:00,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:35:00,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:35:00,957 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-11-18 08:35:00,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:35:00,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:35:00,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:35:00,989 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:35:00,989 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:35:00,990 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:01,027 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/627b03278/b06a460b2f0d4ea8b550974943eda17a/FLAG034fa6cf0 [2018-11-18 08:35:01,428 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:35:01,429 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:01,435 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/627b03278/b06a460b2f0d4ea8b550974943eda17a/FLAG034fa6cf0 [2018-11-18 08:35:01,445 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/627b03278/b06a460b2f0d4ea8b550974943eda17a [2018-11-18 08:35:01,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:35:01,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:35:01,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:01,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:35:01,452 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:35:01,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63274aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01, skipping insertion in model container [2018-11-18 08:35:01,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:35:01,477 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:35:01,605 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:01,608 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:35:01,631 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:01,650 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:35:01,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01 WrapperNode [2018-11-18 08:35:01,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:01,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:35:01,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:35:01,652 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:35:01,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... [2018-11-18 08:35:01,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:35:01,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:35:01,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:35:01,747 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:35:01,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:35:01,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 08:35:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:35:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:35:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 08:35:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 08:35:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 08:35:02,005 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:35:02,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:02 BoogieIcfgContainer [2018-11-18 08:35:02,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:35:02,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:35:02,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:35:02,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:35:02,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:01" (1/3) ... [2018-11-18 08:35:02,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b0f966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:02, skipping insertion in model container [2018-11-18 08:35:02,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:01" (2/3) ... [2018-11-18 08:35:02,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b0f966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:02, skipping insertion in model container [2018-11-18 08:35:02,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:02" (3/3) ... [2018-11-18 08:35:02,011 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:02,017 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:35:02,022 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:35:02,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:35:02,052 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:35:02,052 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:35:02,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:35:02,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:35:02,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:35:02,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:35:02,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:35:02,053 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:35:02,053 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:35:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 08:35:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 08:35:02,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:02,069 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:02,070 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:02,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:02,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1332057809, now seen corresponding path program 1 times [2018-11-18 08:35:02,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:02,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:02,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:02,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:02,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:02,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:35:02,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:35:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:35:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:35:02,191 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-18 08:35:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:02,208 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-18 08:35:02,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:35:02,210 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 08:35:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:02,217 INFO L225 Difference]: With dead ends: 79 [2018-11-18 08:35:02,217 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 08:35:02,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:35:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 08:35:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 08:35:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 08:35:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 08:35:02,251 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-18 08:35:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:02,251 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 08:35:02,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:35:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 08:35:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:35:02,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:02,253 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:02,254 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:02,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:02,254 INFO L82 PathProgramCache]: Analyzing trace with hash 423145447, now seen corresponding path program 1 times [2018-11-18 08:35:02,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:02,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:02,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:02,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:02,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:02,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:02,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:02,330 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 08:35:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:02,358 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-18 08:35:02,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:02,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 08:35:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:02,361 INFO L225 Difference]: With dead ends: 59 [2018-11-18 08:35:02,361 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 08:35:02,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 08:35:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 08:35:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 08:35:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 08:35:02,369 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-18 08:35:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:02,370 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 08:35:02,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 08:35:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 08:35:02,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:02,371 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:02,371 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:02,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -433327690, now seen corresponding path program 1 times [2018-11-18 08:35:02,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:02,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:02,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:02,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:02,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:02,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:02,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:02,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:02,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:02,426 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-18 08:35:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:02,459 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-18 08:35:02,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:02,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 08:35:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:02,460 INFO L225 Difference]: With dead ends: 63 [2018-11-18 08:35:02,461 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 08:35:02,461 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 08:35:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 08:35:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 08:35:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 08:35:02,467 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-18 08:35:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:02,468 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 08:35:02,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 08:35:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 08:35:02,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:02,469 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:02,469 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:02,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:02,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2064688247, now seen corresponding path program 1 times [2018-11-18 08:35:02,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:02,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:02,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:02,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:02,517 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:35:02,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:35:02 BoogieIcfgContainer [2018-11-18 08:35:02,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:35:02,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:35:02,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:35:02,537 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:35:02,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:02" (3/4) ... [2018-11-18 08:35:02,540 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:35:02,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:35:02,540 INFO L168 Benchmark]: Toolchain (without parser) took 1092.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:02,541 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:02,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.26 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 939.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:02,542 INFO L168 Benchmark]: Boogie Preprocessor took 94.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -224.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:02,542 INFO L168 Benchmark]: RCFGBuilder took 259.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:02,543 INFO L168 Benchmark]: TraceAbstraction took 531.19 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:02,543 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:02,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.26 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 939.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 94.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -224.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 259.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 531.19 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.88 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: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4293918725, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918725] [L19] __uint32_t msw, lsw; VAL [\old(x)=4293918725, x=4293918725] [L22] FCALL ieee_double_shape_type ew_u; [L23] FCALL ew_u.value = (x) [L24] EXPR, FCALL ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR, FCALL ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L26] COND FALSE !(0) VAL [\old(x)=4293918725, lsw=1, msw=4293918721, x=4293918725] [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918725, lsw=1, msw=4293918721, x=4293918725] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918725, lsw=1, msw=4293918721, x=4293918725] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918725, lsw=1, msw=4293918721, x=4293918725] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] RET return 0; VAL [\old(x)=4293918725, \result=0, lsw=1, msw=4293918721, x=4293918725] [L46] EXPR __fpclassify_double(x) VAL [\old(x)=4293918725, \old(y)=0, __fpclassify_double(x)=0, x=4293918725, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] RET return y; VAL [\old(x)=4293918725, \old(y)=0, \result=0, x=4293918725, y=0] [L76] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4293918725, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4293918725, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=4293918725, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 08:35:04,049 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:35:04,050 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:35:04,059 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:35:04,059 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:35:04,060 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:35:04,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:35:04,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:35:04,063 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:35:04,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:35:04,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:35:04,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:35:04,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:35:04,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:35:04,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:35:04,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:35:04,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:35:04,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:35:04,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:35:04,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:35:04,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:35:04,074 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:35:04,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:35:04,076 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:35:04,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:35:04,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:35:04,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:35:04,079 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:35:04,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:35:04,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:35:04,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:35:04,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:35:04,081 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:35:04,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:35:04,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:35:04,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:35:04,083 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 08:35:04,093 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:35:04,094 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:35:04,094 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:35:04,095 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:35:04,095 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:35:04,095 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:35:04,095 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:35:04,096 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:35:04,096 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:35:04,097 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:35:04,097 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:35:04,098 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 08:35:04,098 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:35:04,099 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:35:04,099 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:35:04,099 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-11-18 08:35:04,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:35:04,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:35:04,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:35:04,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:35:04,148 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:35:04,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:04,198 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/db10c6436/cbe19070f8114186a072613048680894/FLAG3afe6442d [2018-11-18 08:35:04,538 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:35:04,538 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:04,543 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/db10c6436/cbe19070f8114186a072613048680894/FLAG3afe6442d [2018-11-18 08:35:04,551 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/data/db10c6436/cbe19070f8114186a072613048680894 [2018-11-18 08:35:04,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:35:04,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:35:04,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:04,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:35:04,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:35:04,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c7639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04, skipping insertion in model container [2018-11-18 08:35:04,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:35:04,583 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:35:04,721 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:04,726 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:35:04,747 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:04,766 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:35:04,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04 WrapperNode [2018-11-18 08:35:04,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:04,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:35:04,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:35:04,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:35:04,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... [2018-11-18 08:35:04,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:35:04,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:35:04,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:35:04,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:35:04,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:35:04,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:35:04,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:35:04,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 08:35:04,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 08:35:04,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 08:35:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 08:35:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:35:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 08:35:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 08:35:04,996 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:35:05,067 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:35:05,118 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:35:05,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:05 BoogieIcfgContainer [2018-11-18 08:35:05,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:35:05,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:35:05,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:35:05,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:35:05,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:04" (1/3) ... [2018-11-18 08:35:05,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385dade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:05, skipping insertion in model container [2018-11-18 08:35:05,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:04" (2/3) ... [2018-11-18 08:35:05,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385dade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:05, skipping insertion in model container [2018-11-18 08:35:05,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:05" (3/3) ... [2018-11-18 08:35:05,123 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-11-18 08:35:05,130 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:35:05,135 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:35:05,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:35:05,167 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:35:05,168 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:35:05,168 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:35:05,168 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:35:05,168 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:35:05,168 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:35:05,168 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:35:05,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:35:05,168 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:35:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 08:35:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:35:05,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:05,182 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:05,184 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:05,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash 179175536, now seen corresponding path program 1 times [2018-11-18 08:35:05,190 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:05,190 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 08:35:05,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:05,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:05,254 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:05,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:05,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:35:05,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:35:05,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:35:05,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:35:05,283 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 08:35:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:05,300 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-18 08:35:05,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:35:05,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 08:35:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:05,309 INFO L225 Difference]: With dead ends: 75 [2018-11-18 08:35:05,309 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 08:35:05,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:35:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 08:35:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 08:35:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 08:35:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 08:35:05,342 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 08:35:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:05,342 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 08:35:05,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:35:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 08:35:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 08:35:05,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:05,344 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:05,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:05,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:05,345 INFO L82 PathProgramCache]: Analyzing trace with hash 844301188, now seen corresponding path program 1 times [2018-11-18 08:35:05,345 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:05,345 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 08:35:05,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:05,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:05,415 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:05,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:05,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:05,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:05,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:05,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:05,424 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 08:35:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:05,454 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 08:35:05,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:05,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 08:35:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:05,457 INFO L225 Difference]: With dead ends: 56 [2018-11-18 08:35:05,457 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 08:35:05,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 08:35:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 08:35:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 08:35:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-18 08:35:05,465 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-18 08:35:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:05,465 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 08:35:05,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-18 08:35:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:35:05,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:05,466 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:05,467 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:05,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:05,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1242274605, now seen corresponding path program 1 times [2018-11-18 08:35:05,467 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:05,468 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 08:35:05,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:05,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:05,711 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:05,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:05,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 08:35:05,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:05,724 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-18 08:35:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:06,949 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-18 08:35:06,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:06,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 08:35:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:06,951 INFO L225 Difference]: With dead ends: 63 [2018-11-18 08:35:06,951 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 08:35:06,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:35:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 08:35:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 08:35:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:35:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-18 08:35:06,956 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-18 08:35:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:06,957 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-18 08:35:06,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-18 08:35:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 08:35:06,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:06,957 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:06,959 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:06,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,959 INFO L82 PathProgramCache]: Analyzing trace with hash -91505376, now seen corresponding path program 1 times [2018-11-18 08:35:06,959 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:06,959 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:06,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:07,024 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:07,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:07,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:07,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:07,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:07,037 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-18 08:35:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:07,066 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-18 08:35:07,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:07,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-18 08:35:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:07,068 INFO L225 Difference]: With dead ends: 61 [2018-11-18 08:35:07,068 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 08:35:07,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 08:35:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-18 08:35:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:35:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-18 08:35:07,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-18 08:35:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:07,073 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-18 08:35:07,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-18 08:35:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 08:35:07,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:07,074 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:07,075 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:07,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash 724934153, now seen corresponding path program 1 times [2018-11-18 08:35:07,075 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:07,075 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:07,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:07,278 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:07,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:07,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 08:35:07,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:07,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:07,287 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-18 08:35:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,339 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-18 08:35:08,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:08,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-18 08:35:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,342 INFO L225 Difference]: With dead ends: 62 [2018-11-18 08:35:08,342 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 08:35:08,342 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:35:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 08:35:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-18 08:35:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 08:35:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 08:35:08,347 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-18 08:35:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,347 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 08:35:08,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 08:35:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 08:35:08,348 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,348 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,348 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1225749153, now seen corresponding path program 1 times [2018-11-18 08:35:08,349 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:08,349 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:08,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 08:35:08,417 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:08,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:08,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:08,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:08,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:08,427 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-18 08:35:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,447 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-18 08:35:08,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:08,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 08:35:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,448 INFO L225 Difference]: With dead ends: 58 [2018-11-18 08:35:08,448 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 08:35:08,448 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 08:35:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 08:35:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:35:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-18 08:35:08,452 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-18 08:35:08,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,452 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-18 08:35:08,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-18 08:35:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 08:35:08,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,453 INFO L375 BasicCegarLoop]: trace histogram [2, 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] [2018-11-18 08:35:08,453 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1288711338, now seen corresponding path program 1 times [2018-11-18 08:35:08,454 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:08,454 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:08,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 08:35:08,651 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:08,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:08,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 08:35:08,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:08,660 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-18 08:35:10,341 WARN L180 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-18 08:35:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:10,376 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-18 08:35:10,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:10,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-18 08:35:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:10,377 INFO L225 Difference]: With dead ends: 63 [2018-11-18 08:35:10,378 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 08:35:10,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:35:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 08:35:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 08:35:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:35:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 08:35:10,382 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-18 08:35:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:10,382 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 08:35:10,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 08:35:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 08:35:10,382 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:10,382 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-11-18 08:35:10,383 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:10,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:10,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1406447738, now seen corresponding path program 1 times [2018-11-18 08:35:10,383 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:10,383 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:10,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:10,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 08:35:10,508 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:10,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:10,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 08:35:10,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:35:10,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:35:10,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:35:10,518 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2018-11-18 08:35:10,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:10,613 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-11-18 08:35:10,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:35:10,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 08:35:10,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:10,614 INFO L225 Difference]: With dead ends: 59 [2018-11-18 08:35:10,614 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 08:35:10,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:35:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 08:35:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 08:35:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 08:35:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-18 08:35:10,619 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 32 [2018-11-18 08:35:10,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:10,620 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-18 08:35:10,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:35:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-18 08:35:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 08:35:10,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:10,621 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-11-18 08:35:10,621 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:10,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2079172932, now seen corresponding path program 1 times [2018-11-18 08:35:10,622 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:10,622 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:10,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:10,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 08:35:10,754 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:10,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:10,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 08:35:10,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:10,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:10,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:10,762 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 8 states. [2018-11-18 08:35:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:11,887 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-11-18 08:35:11,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:11,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 08:35:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:11,888 INFO L225 Difference]: With dead ends: 50 [2018-11-18 08:35:11,888 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 08:35:11,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 08:35:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 08:35:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-18 08:35:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 08:35:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-11-18 08:35:11,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 32 [2018-11-18 08:35:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:11,892 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-11-18 08:35:11,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-11-18 08:35:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 08:35:11,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:11,893 INFO L375 BasicCegarLoop]: trace histogram [2, 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] [2018-11-18 08:35:11,893 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:11,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1581338045, now seen corresponding path program 1 times [2018-11-18 08:35:11,894 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:11,894 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/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 [2018-11-18 08:35:11,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:11,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 08:35:11,967 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:11,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:11,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 08:35:11,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 08:35:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 08:35:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:11,976 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 4 states. [2018-11-18 08:35:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:11,993 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2018-11-18 08:35:11,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:11,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-18 08:35:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:11,994 INFO L225 Difference]: With dead ends: 63 [2018-11-18 08:35:11,994 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 08:35:11,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 08:35:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 08:35:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 08:35:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 08:35:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-18 08:35:11,997 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-18 08:35:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:11,997 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-18 08:35:11,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 08:35:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-18 08:35:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 08:35:11,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:11,998 INFO L375 BasicCegarLoop]: trace histogram [2, 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] [2018-11-18 08:35:11,998 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:11,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash -427498318, now seen corresponding path program 1 times [2018-11-18 08:35:11,998 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:11,998 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-18 08:35:12,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:12,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 08:35:12,170 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:35:12,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:12,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 08:35:12,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:12,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:12,182 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-18 08:35:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:12,757 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-18 08:35:12,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:12,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-18 08:35:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:12,759 INFO L225 Difference]: With dead ends: 62 [2018-11-18 08:35:12,759 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 08:35:12,759 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 08:35:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 08:35:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 08:35:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 08:35:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-18 08:35:12,761 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-18 08:35:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:12,762 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-18 08:35:12,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-18 08:35:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 08:35:12,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:12,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-11-18 08:35:12,763 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:12,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -515812987, now seen corresponding path program 1 times [2018-11-18 08:35:12,763 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:35:12,763 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-18 08:35:12,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:13,083 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:35:13,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:35:13 BoogieIcfgContainer [2018-11-18 08:35:13,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:35:13,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:35:13,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:35:13,116 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:35:13,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:05" (3/4) ... [2018-11-18 08:35:13,118 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:35:13,173 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_71ecba9f-726d-4953-a399-7362e61142e9/bin-2019/uautomizer/witness.graphml [2018-11-18 08:35:13,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:35:13,174 INFO L168 Benchmark]: Toolchain (without parser) took 8619.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 948.6 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:13,174 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:13,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.64 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:13,175 INFO L168 Benchmark]: Boogie Preprocessor took 31.83 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:13,175 INFO L168 Benchmark]: RCFGBuilder took 319.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:13,176 INFO L168 Benchmark]: TraceAbstraction took 7996.15 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.2 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:13,176 INFO L168 Benchmark]: Witness Printer took 57.49 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:13,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 211.64 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.83 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 319.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7996.15 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.2 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.49 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [x=0.0, y=0.0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] FCALL ieee_double_shape_type ew_u; [L23] FCALL ew_u.value = (x) [L24] EXPR, FCALL ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR, FCALL ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L26] COND FALSE !(0) VAL [\old(x)=0.0, lsw=0, msw=-2147483648, x=0.0] [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] RET return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L46] EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_double(x) == 0) [L48] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] FCALL ieee_double_shape_type ew_u; [L23] FCALL ew_u.value = (x) [L24] EXPR, FCALL ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR, FCALL ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L26] COND FALSE !(0) VAL [\old(x)=0.0, lsw=0, msw=0, x=0.0] [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] RET return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L48] EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] COND FALSE, EXPR !(x < y ? x : y) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L51] RET return x < y ? x : y; [L76] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0.0, x=0.0, y=0.0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L55] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_double_shape_type gh_u; [L59] FCALL gh_u.value = (x) [L60] EXPR, FCALL gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L61] COND FALSE !(0) VAL [\old(x)=0.0, msw=0, x=0.0] [L63] RET return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L79] EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. UNSAFE Result, 7.9s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 451 SDtfs, 177 SDslu, 1315 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 34701 SizeOfPredicates, 23 NumberOfNonLiveVariables, 925 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...