./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 fa333650cb1e4cf3e280683e8b2ad72d19029b0d ....................................................................................................................................................................................................................................................................................................................................................... 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_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 fa333650cb1e4cf3e280683e8b2ad72d19029b0d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:44:58,851 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:44:58,853 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:44:58,867 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:44:58,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:44:58,869 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:44:58,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:44:58,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:44:58,877 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:44:58,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:44:58,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:44:58,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:44:58,884 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:44:58,886 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:44:58,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:44:58,895 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:44:58,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:44:58,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:44:58,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:44:58,899 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:44:58,900 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:44:58,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:44:58,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:44:58,903 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:44:58,904 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:44:58,904 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:44:58,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:44:58,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:44:58,907 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:44:58,908 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:44:58,908 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:44:58,908 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:44:58,909 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:44:58,909 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:44:58,910 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:44:58,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:44:58,911 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 20:44:58,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:44:58,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:44:58,924 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:44:58,924 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:44:58,925 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:44:58,925 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:44:58,925 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:44:58,925 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:44:58,926 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:44:58,926 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:44:58,926 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:44:58,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:44:58,928 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:44:58,928 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:44:58,928 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:44:58,928 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:44:58,928 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:44:58,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:44:58,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:44:58,929 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:44:58,929 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:44:58,929 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:44:58,929 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:44:58,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:44:58,932 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_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 -> fa333650cb1e4cf3e280683e8b2ad72d19029b0d [2018-10-26 20:44:58,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:44:58,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:44:58,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:44:58,977 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:44:58,978 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:44:58,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:44:59,037 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/ee8b3da96/618198ebe2984d4887e4308f4477e638/FLAGe3f70d03f [2018-10-26 20:44:59,446 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:44:59,447 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:44:59,454 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/ee8b3da96/618198ebe2984d4887e4308f4477e638/FLAGe3f70d03f [2018-10-26 20:44:59,467 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/ee8b3da96/618198ebe2984d4887e4308f4477e638 [2018-10-26 20:44:59,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:44:59,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:44:59,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:44:59,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:44:59,476 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:44:59,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d00b4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59, skipping insertion in model container [2018-10-26 20:44:59,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:44:59,512 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:44:59,700 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:44:59,703 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:44:59,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:44:59,776 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:44:59,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59 WrapperNode [2018-10-26 20:44:59,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:44:59,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:44:59,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:44:59,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:44:59,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... [2018-10-26 20:44:59,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:44:59,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:44:59,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:44:59,845 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:44:59,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:44:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:44:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:44:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-10-26 20:44:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-10-26 20:44:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-10-26 20:44:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-10-26 20:44:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:44:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:44:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 20:44:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-10-26 20:45:01,353 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:45:01,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:01 BoogieIcfgContainer [2018-10-26 20:45:01,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:45:01,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:45:01,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:45:01,357 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:45:01,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:44:59" (1/3) ... [2018-10-26 20:45:01,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d9f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:01, skipping insertion in model container [2018-10-26 20:45:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:44:59" (2/3) ... [2018-10-26 20:45:01,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d9f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:01, skipping insertion in model container [2018-10-26 20:45:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:01" (3/3) ... [2018-10-26 20:45:01,361 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:45:01,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:45:01,374 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:45:01,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:45:01,420 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:45:01,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:45:01,421 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:45:01,421 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:45:01,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:45:01,421 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:45:01,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:45:01,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:45:01,422 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:45:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2018-10-26 20:45:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 20:45:01,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:45:01,454 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, 1, 1] [2018-10-26 20:45:01,456 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:45:01,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:45:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2013009825, now seen corresponding path program 1 times [2018-10-26 20:45:01,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:45:01,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:45:01,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:45:01,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:45:01,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:45:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:45:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:45:01,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:45:01,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:45:01,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:45:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:45:01,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:45:01,621 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 2 states. [2018-10-26 20:45:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:45:01,667 INFO L93 Difference]: Finished difference Result 456 states and 573 transitions. [2018-10-26 20:45:01,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:45:01,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-10-26 20:45:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:45:01,681 INFO L225 Difference]: With dead ends: 456 [2018-10-26 20:45:01,681 INFO L226 Difference]: Without dead ends: 228 [2018-10-26 20:45:01,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:45:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-26 20:45:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-26 20:45:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-26 20:45:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 250 transitions. [2018-10-26 20:45:01,743 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 250 transitions. Word has length 28 [2018-10-26 20:45:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:45:01,743 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 250 transitions. [2018-10-26 20:45:01,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:45:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 250 transitions. [2018-10-26 20:45:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-26 20:45:01,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:45:01,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:45:01,746 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:45:01,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:45:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash 237649631, now seen corresponding path program 1 times [2018-10-26 20:45:01,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:45:01,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:45:01,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:45:01,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:45:01,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:45:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:45:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:45:01,971 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:45:02,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:45:02 BoogieIcfgContainer [2018-10-26 20:45:02,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:45:02,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:45:02,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:45:02,055 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:45:02,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:01" (3/4) ... [2018-10-26 20:45:02,067 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:45:02,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:45:02,068 INFO L168 Benchmark]: Toolchain (without parser) took 2597.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 960.8 MB in the beginning and 1.0 GB in the end (delta: -84.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:45:02,069 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:45:02,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.87 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 944.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:45:02,070 INFO L168 Benchmark]: Boogie Preprocessor took 66.79 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 942.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:45:02,071 INFO L168 Benchmark]: RCFGBuilder took 1508.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:45:02,072 INFO L168 Benchmark]: TraceAbstraction took 700.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:45:02,072 INFO L168 Benchmark]: Witness Printer took 12.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:45:02,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.87 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 944.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.79 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 942.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1508.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 700.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 12.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 234]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 118, overapproximation of bitwiseAnd at line 218. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=10737418246, \old(tiny_sqrt)=10737418251, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L229] float x = 1.0f / 0.0f; [L230] float y = __VERIFIER_nondet_float(); [L231] CALL, EXPR __ieee754_hypotf(x, y) VAL [\old(x)=10737418243, \old(y)=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L82] float a = x, b = y, t1, t2, y1, y2, w; [L83] __int32_t j, k, ha, hb; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L86] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L87] FCALL gf_u.value = (x) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L88] EXPR, FCALL gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, gf_u.word=6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L88] (ha) = gf_u.word VAL [(ha) = gf_u.word=10737418247, \old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, gf_u.word=6442450944, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L89] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L90] ha &= 0x7fffffffL VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L92] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L93] FCALL gf_u.value = (y) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L94] EXPR, FCALL gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, gf_u.word=10737418240, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L94] (hb) = gf_u.word VAL [(hb) = gf_u.word=10737418256, \old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, gf_u.word=10737418240, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L95] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L96] hb &= 0x7fffffffL VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L97] COND TRUE hb > ha [L98] a = y [L99] b = x [L100] j = ha [L101] ha = hb [L102] hb = j VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L108] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L109] FCALL sf_u.word = (ha) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L110] EXPR, FCALL sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L110] (a) = sf_u.value [L111] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L113] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L114] FCALL sf_u.word = (hb) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L115] EXPR, FCALL sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L115] (b) = sf_u.value VAL [(b) = sf_u.value=10737418253, \old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L116] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L117] COND TRUE (ha - hb) > 0xf000000L [L118] RET return a + b; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L231] EXPR __ieee754_hypotf(x, y) VAL [__ieee754_hypotf(x, y)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L231] float res = __ieee754_hypotf(x, y); [L233] CALL, EXPR isinf_float(res) VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L212] __int32_t ix; VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L214] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418241, gf_u={10737418244:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L215] FCALL gf_u.value = (x) VAL [\old(x)=10737418241, gf_u={10737418244:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] EXPR, FCALL gf_u.word VAL [\old(x)=10737418241, gf_u={10737418244:0}, gf_u.word=-6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] (ix) = gf_u.word VAL [(ix) = gf_u.word=10737418250, \old(x)=10737418241, gf_u={10737418244:0}, gf_u.word=-6442450944, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L217] COND FALSE !(0) VAL [\old(x)=10737418241, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L218] ix &= 0x7fffffff [L219] RET return ((ix) == 0x7f800000L); VAL [\old(x)=10737418241, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L233] EXPR isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L233] COND TRUE !isinf_float(res) [L234] __VERIFIER_error() VAL [one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 232 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 254 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:45:04,188 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:45:04,190 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:45:04,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:45:04,208 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:45:04,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:45:04,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:45:04,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:45:04,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:45:04,214 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:45:04,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:45:04,215 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:45:04,216 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:45:04,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:45:04,217 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:45:04,218 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:45:04,219 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:45:04,220 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:45:04,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:45:04,223 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:45:04,224 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:45:04,225 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:45:04,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:45:04,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:45:04,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:45:04,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:45:04,229 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:45:04,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:45:04,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:45:04,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:45:04,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:45:04,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:45:04,232 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:45:04,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:45:04,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:45:04,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:45:04,234 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 20:45:04,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:45:04,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:45:04,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:45:04,247 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:45:04,247 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:45:04,248 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:45:04,248 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:45:04,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:45:04,248 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:45:04,248 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:45:04,249 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:45:04,249 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:45:04,249 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:45:04,249 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:45:04,249 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:45:04,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:45:04,250 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:45:04,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:45:04,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:45:04,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:45:04,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:45:04,251 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:45:04,251 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 20:45:04,252 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:45:04,252 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:45:04,252 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:45:04,252 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_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 -> fa333650cb1e4cf3e280683e8b2ad72d19029b0d [2018-10-26 20:45:04,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:45:04,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:45:04,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:45:04,324 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:45:04,325 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:45:04,326 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:45:04,380 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/f81d1ad05/9326035e7db84d919cafadfea98bcde8/FLAG32c017456 [2018-10-26 20:45:04,772 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:45:04,773 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/sv-benchmarks/c/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:45:04,781 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/f81d1ad05/9326035e7db84d919cafadfea98bcde8/FLAG32c017456 [2018-10-26 20:45:04,795 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/data/f81d1ad05/9326035e7db84d919cafadfea98bcde8 [2018-10-26 20:45:04,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:45:04,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:45:04,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:45:04,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:45:04,805 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:45:04,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:45:04" (1/1) ... [2018-10-26 20:45:04,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9882ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:04, skipping insertion in model container [2018-10-26 20:45:04,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:45:04" (1/1) ... [2018-10-26 20:45:04,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:45:04,848 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:45:05,064 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:45:05,070 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:45:05,134 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:45:05,159 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:45:05,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05 WrapperNode [2018-10-26 20:45:05,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:45:05,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:45:05,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:45:05,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:45:05,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... [2018-10-26 20:45:05,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:45:05,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:45:05,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:45:05,253 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:45:05,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:45:05,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:45:05,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:45:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-10-26 20:45:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-10-26 20:45:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-10-26 20:45:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-10-26 20:45:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:45:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:45:05,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-10-26 20:45:05,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-10-26 20:45:05,734 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:05,746 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:05,842 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:05,849 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:05,889 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:05,895 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:06,775 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:06,781 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:45:07,476 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:45:07,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:07 BoogieIcfgContainer [2018-10-26 20:45:07,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:45:07,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:45:07,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:45:07,482 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:45:07,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:45:04" (1/3) ... [2018-10-26 20:45:07,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448f3134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:07, skipping insertion in model container [2018-10-26 20:45:07,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:45:05" (2/3) ... [2018-10-26 20:45:07,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448f3134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:45:07, skipping insertion in model container [2018-10-26 20:45:07,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:45:07" (3/3) ... [2018-10-26 20:45:07,485 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a_true-unreach-call.c [2018-10-26 20:45:07,493 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:45:07,503 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:45:07,516 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:45:07,548 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:45:07,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:45:07,550 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:45:07,550 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:45:07,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:45:07,550 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:45:07,550 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:45:07,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:45:07,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:45:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2018-10-26 20:45:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 20:45:07,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:45:07,582 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, 1] [2018-10-26 20:45:07,584 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:45:07,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:45:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1998677788, now seen corresponding path program 1 times [2018-10-26 20:45:07,595 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:45:07,596 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 20:45:07,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:45:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:45:07,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:45:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:45:07,769 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:45:07,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:45:07,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:45:07,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:45:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:45:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:45:07,808 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 2 states. [2018-10-26 20:45:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:45:07,887 INFO L93 Difference]: Finished difference Result 454 states and 571 transitions. [2018-10-26 20:45:07,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:45:07,888 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-10-26 20:45:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:45:07,905 INFO L225 Difference]: With dead ends: 454 [2018-10-26 20:45:07,906 INFO L226 Difference]: Without dead ends: 227 [2018-10-26 20:45:07,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:45:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-26 20:45:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-26 20:45:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-26 20:45:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2018-10-26 20:45:07,979 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 27 [2018-10-26 20:45:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:45:07,979 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2018-10-26 20:45:07,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:45:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2018-10-26 20:45:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-26 20:45:07,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:45:07,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:45:07,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:45:07,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:45:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -711257081, now seen corresponding path program 1 times [2018-10-26 20:45:07,985 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:45:07,986 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:45:07,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:45:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:45:08,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:45:08,307 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:45:08,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:45:08,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,359 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,416 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:45:08,457 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:45:08,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:45:08,487 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,497 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:08,497 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:45:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:45:09,349 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:45:09,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:45:09,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-26 20:45:09,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 20:45:09,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 20:45:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-26 20:45:09,373 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand 11 states. [2018-10-26 20:45:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:45:43,601 INFO L93 Difference]: Finished difference Result 534 states and 582 transitions. [2018-10-26 20:45:43,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 20:45:43,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2018-10-26 20:45:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:45:43,609 INFO L225 Difference]: With dead ends: 534 [2018-10-26 20:45:43,609 INFO L226 Difference]: Without dead ends: 309 [2018-10-26 20:45:43,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2018-10-26 20:45:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-26 20:45:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 250. [2018-10-26 20:45:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-26 20:45:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 272 transitions. [2018-10-26 20:45:43,649 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 272 transitions. Word has length 72 [2018-10-26 20:45:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:45:43,649 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 272 transitions. [2018-10-26 20:45:43,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 20:45:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 272 transitions. [2018-10-26 20:45:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-26 20:45:43,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:45:43,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:45:43,652 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:45:43,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:45:43,652 INFO L82 PathProgramCache]: Analyzing trace with hash -463110587, now seen corresponding path program 1 times [2018-10-26 20:45:43,653 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:45:43,653 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:45:43,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:45:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:45:43,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:45:43,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:45:44,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:45:44,002 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,026 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:45:44,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:45:44,230 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:45:44,230 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,258 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,282 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,282 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:45:44,825 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:45:44,829 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:45:44,830 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,862 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,878 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-26 20:45:44,879 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2018-10-26 20:45:44,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:45:44,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:45:44,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:44,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-26 20:45:44,984 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:29 [2018-10-26 20:45:45,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:45:45,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:45:45,180 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:45,185 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:45,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-26 20:45:45,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:36 [2018-10-26 20:45:45,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:45:45,345 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:45:45,345 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:45,375 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:45,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-26 20:45:45,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:57, output treesize:38 [2018-10-26 20:45:48,926 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:45:48,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:45:48,929 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:48,934 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:48,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:48,942 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:45:49,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:45:49,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:45:49,172 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:45:49,174 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:49,177 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:45:49,177 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:45:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:45:50,232 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:45:50,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:45:50,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-10-26 20:45:50,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-26 20:45:50,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-26 20:45:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2018-10-26 20:45:50,246 INFO L87 Difference]: Start difference. First operand 250 states and 272 transitions. Second operand 24 states. [2018-10-26 20:46:02,138 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 20:46:03,588 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 20:46:08,096 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-10-26 20:46:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:46:16,975 INFO L93 Difference]: Finished difference Result 263 states and 288 transitions. [2018-10-26 20:46:17,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-26 20:46:17,023 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 72 [2018-10-26 20:46:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:46:17,025 INFO L225 Difference]: With dead ends: 263 [2018-10-26 20:46:17,025 INFO L226 Difference]: Without dead ends: 256 [2018-10-26 20:46:17,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=271, Invalid=2279, Unknown=0, NotChecked=0, Total=2550 [2018-10-26 20:46:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-26 20:46:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2018-10-26 20:46:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-26 20:46:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 271 transitions. [2018-10-26 20:46:17,046 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 271 transitions. Word has length 72 [2018-10-26 20:46:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:46:17,046 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 271 transitions. [2018-10-26 20:46:17,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-26 20:46:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 271 transitions. [2018-10-26 20:46:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-26 20:46:17,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:46:17,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:46:17,049 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:46:17,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:46:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash -463560330, now seen corresponding path program 1 times [2018-10-26 20:46:17,052 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:46:17,052 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:46:17,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:46:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:46:17,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:46:17,250 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:46:17,261 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:46:17,262 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,286 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,293 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,293 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:46:17,308 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:46:17,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:46:17,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,316 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,318 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,318 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:46:17,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 20:46:17,488 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 20:46:17,489 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,492 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:46:17,500 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-10-26 20:46:17,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-10-26 20:46:17,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-26 20:46:17,549 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,553 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:17,561 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:46:17,562 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-10-26 20:46:18,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:46:18,012 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:46:18,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,034 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,035 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:46:18,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:46:18,112 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:46:18,113 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,115 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,118 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:18,118 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:46:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:46:18,480 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:46:18,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:46:18,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-10-26 20:46:18,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-26 20:46:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-26 20:46:18,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-10-26 20:46:18,493 INFO L87 Difference]: Start difference. First operand 250 states and 271 transitions. Second operand 22 states. [2018-10-26 20:46:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:46:39,675 INFO L93 Difference]: Finished difference Result 332 states and 360 transitions. [2018-10-26 20:46:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-26 20:46:39,676 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 77 [2018-10-26 20:46:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:46:39,678 INFO L225 Difference]: With dead ends: 332 [2018-10-26 20:46:39,678 INFO L226 Difference]: Without dead ends: 324 [2018-10-26 20:46:39,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2018-10-26 20:46:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-26 20:46:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 253. [2018-10-26 20:46:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-26 20:46:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 276 transitions. [2018-10-26 20:46:39,702 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 276 transitions. Word has length 77 [2018-10-26 20:46:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:46:39,702 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 276 transitions. [2018-10-26 20:46:39,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-26 20:46:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 276 transitions. [2018-10-26 20:46:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-26 20:46:39,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:46:39,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:46:39,704 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:46:39,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:46:39,705 INFO L82 PathProgramCache]: Analyzing trace with hash -244705612, now seen corresponding path program 1 times [2018-10-26 20:46:39,708 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:46:39,708 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:46:39,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:46:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:46:39,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:46:39,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:46:39,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:46:39,836 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,843 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,850 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,850 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:46:39,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:46:39,867 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:46:39,867 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,871 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:46:39,872 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:46:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:46:40,054 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:46:40,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:46:40,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 20:46:40,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:46:40,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:46:40,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:46:40,063 INFO L87 Difference]: Start difference. First operand 253 states and 276 transitions. Second operand 10 states. [2018-10-26 20:47:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:47:14,995 INFO L93 Difference]: Finished difference Result 441 states and 475 transitions. [2018-10-26 20:47:14,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 20:47:15,005 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2018-10-26 20:47:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:47:15,010 INFO L225 Difference]: With dead ends: 441 [2018-10-26 20:47:15,010 INFO L226 Difference]: Without dead ends: 306 [2018-10-26 20:47:15,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-26 20:47:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-26 20:47:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 251. [2018-10-26 20:47:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-26 20:47:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2018-10-26 20:47:15,025 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 77 [2018-10-26 20:47:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:47:15,025 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2018-10-26 20:47:15,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:47:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2018-10-26 20:47:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-26 20:47:15,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:47:15,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:47:15,027 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:47:15,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:47:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash 988789622, now seen corresponding path program 1 times [2018-10-26 20:47:15,028 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:47:15,028 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:47:15,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:47:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:47:15,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:47:15,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:47:15,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:47:15,170 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,173 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:47:15,179 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:13 [2018-10-26 20:47:15,203 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:47:15,210 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:47:15,210 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,213 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,219 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:47:15,219 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:15 [2018-10-26 20:47:15,377 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:47:15,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:47:15,379 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,383 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,390 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,390 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:47:15,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:47:15,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:47:15,454 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,465 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:15,467 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:47:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:47:15,623 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:47:15,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:47:15,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-10-26 20:47:15,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 20:47:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 20:47:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-10-26 20:47:15,632 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 16 states. [2018-10-26 20:47:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:47:27,684 INFO L93 Difference]: Finished difference Result 314 states and 337 transitions. [2018-10-26 20:47:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 20:47:27,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2018-10-26 20:47:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:47:27,686 INFO L225 Difference]: With dead ends: 314 [2018-10-26 20:47:27,686 INFO L226 Difference]: Without dead ends: 306 [2018-10-26 20:47:27,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2018-10-26 20:47:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-26 20:47:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 251. [2018-10-26 20:47:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-26 20:47:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2018-10-26 20:47:27,701 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 77 [2018-10-26 20:47:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:47:27,702 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2018-10-26 20:47:27,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 20:47:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2018-10-26 20:47:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-26 20:47:27,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:47:27,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:47:27,704 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:47:27,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:47:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1207644340, now seen corresponding path program 1 times [2018-10-26 20:47:27,705 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:47:27,708 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:47:27,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:47:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:47:27,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:47:27,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:47:27,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:47:27,846 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,848 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,855 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,855 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:47:27,869 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:47:27,894 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:47:27,894 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,922 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,924 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,924 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:47:27,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 20:47:27,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 20:47:27,995 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:27,999 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,007 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:47:28,008 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-10-26 20:47:28,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-10-26 20:47:28,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-26 20:47:28,052 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,055 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:47:28,063 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-10-26 20:47:28,451 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:47:28,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:47:28,454 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,457 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,467 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:47:28,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:47:28,544 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:47:28,545 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,552 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,554 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:28,554 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:47:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:47:29,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:47:29,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:47:29,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-10-26 20:47:29,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 20:47:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 20:47:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-10-26 20:47:29,052 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand 21 states. [2018-10-26 20:47:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:47:48,726 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions. [2018-10-26 20:47:48,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-26 20:47:48,727 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 77 [2018-10-26 20:47:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:47:48,728 INFO L225 Difference]: With dead ends: 258 [2018-10-26 20:47:48,728 INFO L226 Difference]: Without dead ends: 225 [2018-10-26 20:47:48,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2018-10-26 20:47:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-26 20:47:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-26 20:47:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-26 20:47:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 242 transitions. [2018-10-26 20:47:48,741 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 242 transitions. Word has length 77 [2018-10-26 20:47:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:47:48,742 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 242 transitions. [2018-10-26 20:47:48,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 20:47:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 242 transitions. [2018-10-26 20:47:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 20:47:48,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:47:48,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:47:48,743 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:47:48,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:47:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1253625132, now seen corresponding path program 1 times [2018-10-26 20:47:48,744 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:47:48,744 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:47:48,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:47:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:47:48,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:47:48,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:47:48,920 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:47:48,920 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,924 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,930 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,931 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:47:48,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:47:48,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:47:48,946 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,949 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,950 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:47:48,951 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:47:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:47:49,301 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:47:49,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:47:49,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-26 20:47:49,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 20:47:49,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 20:47:49,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-26 20:47:49,310 INFO L87 Difference]: Start difference. First operand 225 states and 242 transitions. Second operand 11 states. [2018-10-26 20:48:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:48:39,208 INFO L93 Difference]: Finished difference Result 403 states and 431 transitions. [2018-10-26 20:48:39,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 20:48:39,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2018-10-26 20:48:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:48:39,211 INFO L225 Difference]: With dead ends: 403 [2018-10-26 20:48:39,211 INFO L226 Difference]: Without dead ends: 245 [2018-10-26 20:48:39,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-10-26 20:48:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-26 20:48:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 191. [2018-10-26 20:48:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-26 20:48:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 205 transitions. [2018-10-26 20:48:39,229 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 205 transitions. Word has length 96 [2018-10-26 20:48:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:48:39,229 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 205 transitions. [2018-10-26 20:48:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 20:48:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 205 transitions. [2018-10-26 20:48:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 20:48:39,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:48:39,232 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:48:39,233 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:48:39,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:48:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -621518797, now seen corresponding path program 1 times [2018-10-26 20:48:39,233 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:48:39,233 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5b731a3-bf80-41fc-8c44-dfb72f3419d6/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 [2018-10-26 20:48:39,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:48:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:48:39,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:48:39,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 20:48:39,709 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 20:48:39,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,713 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,720 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,720 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:48:39,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 20:48:39,735 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 20:48:39,736 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,746 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,748 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,749 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:48:39,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 20:48:39,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 20:48:39,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:48:39,875 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-10-26 20:48:39,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2018-10-26 20:48:39,947 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-26 20:48:39,947 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,950 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:48:39,958 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:48:39,958 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2018-10-26 20:48:43,381 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-26 20:48:59,361 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-26 20:48:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:48:59,508 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:48:59,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:48:59,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-10-26 20:48:59,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 20:48:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 20:48:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=151, Unknown=5, NotChecked=0, Total=182 [2018-10-26 20:48:59,526 INFO L87 Difference]: Start difference. First operand 191 states and 205 transitions. Second operand 14 states. [2018-10-26 20:49:03,814 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 20:49:46,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 20:49:46,835 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 43 more [2018-10-26 20:49:46,839 INFO L168 Benchmark]: Toolchain (without parser) took 282040.03 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 257.9 MB). Free memory was 953.2 MB in the beginning and 885.9 MB in the end (delta: 67.3 MB). Peak memory consumption was 325.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:49:46,839 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:49:46,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.95 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:49:46,840 INFO L168 Benchmark]: Boogie Preprocessor took 90.71 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:49:46,840 INFO L168 Benchmark]: RCFGBuilder took 2225.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:49:46,840 INFO L168 Benchmark]: TraceAbstraction took 279360.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 885.9 MB in the end (delta: 239.1 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:49:46,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 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 359.95 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.71 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2225.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 279360.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 885.9 MB in the end (delta: 239.1 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...