./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ........................................................................................................................................................................................................................................................................................................................................................................................................... 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_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:30:06,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:30:06,920 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:30:06,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:30:06,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:30:06,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:30:06,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:30:06,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:30:06,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:30:06,930 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:30:06,931 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:30:06,931 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:30:06,931 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:30:06,932 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:30:06,932 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:30:06,933 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:30:06,933 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:30:06,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:30:06,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:30:06,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:30:06,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:30:06,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:30:06,938 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:30:06,938 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:30:06,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:30:06,939 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:30:06,939 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:30:06,940 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:30:06,940 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:30:06,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:30:06,941 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:30:06,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:30:06,941 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:30:06,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:30:06,942 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:30:06,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:30:06,942 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 16:30:06,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:30:06,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:30:06,950 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:30:06,951 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:30:06,951 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:30:06,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:30:06,952 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:30:06,953 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:30:06,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:30:06,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:30:06,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:30:06,954 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:30:06,954 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan 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 -> Taipan 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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2018-12-09 16:30:06,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:30:06,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:30:06,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:30:06,984 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:30:06,985 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:30:06,985 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:07,030 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/9261cb65a/0daffcbd6e764748863f9675ec6877c3/FLAG4b31182de [2018-12-09 16:30:07,477 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:30:07,477 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:07,481 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/9261cb65a/0daffcbd6e764748863f9675ec6877c3/FLAG4b31182de [2018-12-09 16:30:07,489 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/9261cb65a/0daffcbd6e764748863f9675ec6877c3 [2018-12-09 16:30:07,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:30:07,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:30:07,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:30:07,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:30:07,495 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:30:07,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07, skipping insertion in model container [2018-12-09 16:30:07,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:30:07,512 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:30:07,606 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:30:07,608 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:30:07,623 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:30:07,635 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:30:07,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07 WrapperNode [2018-12-09 16:30:07,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:30:07,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:30:07,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:30:07,636 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:30:07,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:30:07,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:30:07,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:30:07,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:30:07,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... [2018-12-09 16:30:07,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:30:07,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:30:07,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:30:07,697 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:30:07,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 16:30:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 16:30:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:30:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 16:30:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:30:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 16:30:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:30:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:30:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:30:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 16:30:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:30:07,879 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:30:07,879 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 16:30:07,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:07 BoogieIcfgContainer [2018-12-09 16:30:07,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:30:07,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:30:07,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:30:07,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:30:07,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:30:07" (1/3) ... [2018-12-09 16:30:07,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75421ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:30:07, skipping insertion in model container [2018-12-09 16:30:07,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:07" (2/3) ... [2018-12-09 16:30:07,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75421ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:30:07, skipping insertion in model container [2018-12-09 16:30:07,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:07" (3/3) ... [2018-12-09 16:30:07,883 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:07,889 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:30:07,894 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:30:07,902 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:30:07,919 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:30:07,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:30:07,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:30:07,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:30:07,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:30:07,919 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:30:07,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:30:07,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:30:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 16:30:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 16:30:07,933 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:07,933 INFO L402 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] [2018-12-09 16:30:07,935 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:07,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2032926079, now seen corresponding path program 1 times [2018-12-09 16:30:07,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:30:07,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:07,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:07,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:07,968 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:30:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:08,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:08,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:30:08,019 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:30:08,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:30:08,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:30:08,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:30:08,030 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 16:30:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:08,044 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2018-12-09 16:30:08,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:30:08,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-12-09 16:30:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:08,050 INFO L225 Difference]: With dead ends: 69 [2018-12-09 16:30:08,050 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 16:30:08,052 INFO L631 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 [2018-12-09 16:30:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 16:30:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 16:30:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 16:30:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-12-09 16:30:08,076 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2018-12-09 16:30:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:08,076 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-12-09 16:30:08,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:30:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-12-09 16:30:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 16:30:08,077 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:08,077 INFO L402 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] [2018-12-09 16:30:08,077 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:08,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 544472172, now seen corresponding path program 1 times [2018-12-09 16:30:08,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:30:08,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:08,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,079 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:30:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:08,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:08,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:08,126 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:30:08,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:08,127 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2018-12-09 16:30:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:08,143 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-12-09 16:30:08,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:08,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 16:30:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:08,145 INFO L225 Difference]: With dead ends: 47 [2018-12-09 16:30:08,145 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 16:30:08,146 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 16:30:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 16:30:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:30:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-09 16:30:08,151 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2018-12-09 16:30:08,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:08,151 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-09 16:30:08,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-09 16:30:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 16:30:08,152 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:08,152 INFO L402 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] [2018-12-09 16:30:08,152 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:08,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2058062536, now seen corresponding path program 1 times [2018-12-09 16:30:08,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:30:08,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:08,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:30:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:08,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:08,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:08,187 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:30:08,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:08,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:08,188 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2018-12-09 16:30:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:08,207 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-12-09 16:30:08,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:08,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-12-09 16:30:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:08,208 INFO L225 Difference]: With dead ends: 51 [2018-12-09 16:30:08,208 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 16:30:08,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 16:30:08,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-12-09 16:30:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:30:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-09 16:30:08,212 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2018-12-09 16:30:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:08,212 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-09 16:30:08,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-09 16:30:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 16:30:08,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:08,213 INFO L402 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] [2018-12-09 16:30:08,213 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:08,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2040391255, now seen corresponding path program 1 times [2018-12-09 16:30:08,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:30:08,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:08,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:30:08,214 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:30:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:30:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:30:08,247 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:30:08,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:30:08 BoogieIcfgContainer [2018-12-09 16:30:08,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:30:08,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:30:08,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:30:08,264 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:30:08,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:07" (3/4) ... [2018-12-09 16:30:08,267 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 16:30:08,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:30:08,267 INFO L168 Benchmark]: Toolchain (without parser) took 775.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -82.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,268 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:30:08,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.39 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.59 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,269 INFO L168 Benchmark]: Boogie Preprocessor took 47.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,270 INFO L168 Benchmark]: RCFGBuilder took 182.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,270 INFO L168 Benchmark]: TraceAbstraction took 384.37 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: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:08,270 INFO L168 Benchmark]: Witness Printer took 2.97 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. [2018-12-09 16:30:08,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.39 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.59 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 384.37 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: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.97 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: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; VAL [x=4294967300] [L72] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967300] [L16] return x != x; VAL [\old(x)=4294967300, \result=0, x=4294967300] [L72] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967300] [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=4294967302] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=2146435073, x=4294967300] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=4294967302, __fpclassify_double(x)=0, x=4294967300, y=4294967302] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967300, \old(y)=4294967302, \result=4294967302, x=4294967300, y=4294967302] [L74] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967302, x=4294967300, y=4294967302] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4294967302, x=4294967300, y=4294967302] [L78] __VERIFIER_error() VAL [res=4294967302, x=4294967300, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 SDtfs, 0 SDslu, 162 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:30:09,642 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:30:09,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:30:09,649 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:30:09,649 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:30:09,650 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:30:09,650 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:30:09,651 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:30:09,652 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:30:09,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:30:09,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:30:09,653 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:30:09,653 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:30:09,654 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:30:09,654 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:30:09,655 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:30:09,655 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:30:09,656 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:30:09,657 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:30:09,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:30:09,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:30:09,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:30:09,660 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:30:09,660 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:30:09,660 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:30:09,660 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:30:09,661 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:30:09,661 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:30:09,662 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:30:09,662 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:30:09,663 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:30:09,663 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:30:09,663 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:30:09,663 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:30:09,664 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:30:09,664 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:30:09,664 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 16:30:09,672 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:30:09,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:30:09,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:30:09,672 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:30:09,672 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:30:09,672 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:30:09,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:30:09,673 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:30:09,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:30:09,674 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:30:09,675 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 16:30:09,675 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 16:30:09,675 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_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan 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 -> Taipan 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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2018-12-09 16:30:09,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:30:09,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:30:09,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:30:09,707 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:30:09,707 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:30:09,708 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:09,747 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/5ce1e93d1/5e710360c3054f728e672d0f4abacae8/FLAGe3dee368a [2018-12-09 16:30:10,083 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:30:10,083 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:10,088 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/5ce1e93d1/5e710360c3054f728e672d0f4abacae8/FLAGe3dee368a [2018-12-09 16:30:10,495 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/data/5ce1e93d1/5e710360c3054f728e672d0f4abacae8 [2018-12-09 16:30:10,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:30:10,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:30:10,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:30:10,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:30:10,510 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:30:10,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ce2dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10, skipping insertion in model container [2018-12-09 16:30:10,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:30:10,530 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:30:10,625 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:30:10,628 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:30:10,643 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:30:10,659 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:30:10,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10 WrapperNode [2018-12-09 16:30:10,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:30:10,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:30:10,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:30:10,660 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:30:10,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:30:10,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:30:10,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:30:10,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:30:10,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... [2018-12-09 16:30:10,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:30:10,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:30:10,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:30:10,693 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:30:10,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 16:30:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 16:30:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 16:30:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:30:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 16:30:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:30:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 16:30:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 16:30:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:30:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:30:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:30:10,858 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:30:10,919 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:30:10,919 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 16:30:10,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:10 BoogieIcfgContainer [2018-12-09 16:30:10,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:30:10,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:30:10,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:30:10,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:30:10,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:30:10" (1/3) ... [2018-12-09 16:30:10,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab716ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:30:10, skipping insertion in model container [2018-12-09 16:30:10,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:30:10" (2/3) ... [2018-12-09 16:30:10,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab716ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:30:10, skipping insertion in model container [2018-12-09 16:30:10,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:10" (3/3) ... [2018-12-09 16:30:10,924 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-12-09 16:30:10,929 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:30:10,933 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:30:10,942 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:30:10,959 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 16:30:10,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:30:10,960 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:30:10,960 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:30:10,960 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:30:10,960 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:30:10,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:30:10,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:30:10,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:30:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-09 16:30:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 16:30:10,975 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:10,975 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:10,977 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:10,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1614855583, now seen corresponding path program 1 times [2018-12-09 16:30:10,982 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:10,983 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:10,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:11,044 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:11,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:11,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:30:11,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:30:11,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:30:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:30:11,063 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-12-09 16:30:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:11,076 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2018-12-09 16:30:11,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:30:11,077 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-12-09 16:30:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:11,082 INFO L225 Difference]: With dead ends: 64 [2018-12-09 16:30:11,082 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 16:30:11,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:30:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 16:30:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 16:30:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 16:30:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-12-09 16:30:11,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 25 [2018-12-09 16:30:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:11,108 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-12-09 16:30:11,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:30:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-12-09 16:30:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 16:30:11,110 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:11,110 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:11,110 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:11,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 756047800, now seen corresponding path program 1 times [2018-12-09 16:30:11,111 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:11,111 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:11,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:11,184 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:11,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:11,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:11,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:11,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,193 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2018-12-09 16:30:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:11,223 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 16:30:11,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:11,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 16:30:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:11,225 INFO L225 Difference]: With dead ends: 43 [2018-12-09 16:30:11,226 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 16:30:11,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 16:30:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 16:30:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 16:30:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-09 16:30:11,231 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 26 [2018-12-09 16:30:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:11,231 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-09 16:30:11,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-09 16:30:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 16:30:11,232 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:11,232 INFO L402 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] [2018-12-09 16:30:11,232 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:11,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:11,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1333859716, now seen corresponding path program 1 times [2018-12-09 16:30:11,233 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:11,233 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:11,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:11,291 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:11,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:11,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:11,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,299 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-09 16:30:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:11,313 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-09 16:30:11,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:11,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 16:30:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:11,315 INFO L225 Difference]: With dead ends: 46 [2018-12-09 16:30:11,315 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 16:30:11,316 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 16:30:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-09 16:30:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 16:30:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-09 16:30:11,321 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2018-12-09 16:30:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:11,322 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-09 16:30:11,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-09 16:30:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 16:30:11,323 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:11,323 INFO L402 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] [2018-12-09 16:30:11,323 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:11,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:11,323 INFO L82 PathProgramCache]: Analyzing trace with hash -868690628, now seen corresponding path program 1 times [2018-12-09 16:30:11,323 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:11,324 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:11,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:11,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:11,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:11,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:11,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:11,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:11,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,389 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-09 16:30:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:11,418 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-09 16:30:11,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:11,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 16:30:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:11,419 INFO L225 Difference]: With dead ends: 46 [2018-12-09 16:30:11,419 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 16:30:11,419 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 16:30:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-09 16:30:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 16:30:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-09 16:30:11,423 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 28 [2018-12-09 16:30:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:11,423 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-09 16:30:11,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-09 16:30:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 16:30:11,424 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:11,424 INFO L402 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] [2018-12-09 16:30:11,424 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:11,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:11,424 INFO L82 PathProgramCache]: Analyzing trace with hash 931842184, now seen corresponding path program 1 times [2018-12-09 16:30:11,424 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:11,424 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:11,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:11,476 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:11,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:11,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:11,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:11,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,483 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-09 16:30:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:11,512 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-09 16:30:11,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:11,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-09 16:30:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:11,513 INFO L225 Difference]: With dead ends: 46 [2018-12-09 16:30:11,513 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 16:30:11,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 16:30:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-09 16:30:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 16:30:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-09 16:30:11,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2018-12-09 16:30:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:11,517 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-09 16:30:11,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-09 16:30:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 16:30:11,518 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:11,518 INFO L402 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] [2018-12-09 16:30:11,518 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:11,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -875612279, now seen corresponding path program 1 times [2018-12-09 16:30:11,519 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:11,519 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:11,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:11,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:11,675 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 16:30:11,676 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 16:30:11,679 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-12-09 16:30:11,710 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-09 16:30:11,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 16:30:11,725 INFO L478 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 24 treesize of output 18 [2018-12-09 16:30:11,730 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-12-09 16:30:11,730 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 16:30:11,732 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:30:11,734 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:30:11,742 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. [2018-12-09 16:30:11,742 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-09 16:30:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:30:12,216 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:12,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:12,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-09 16:30:12,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 16:30:12,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 16:30:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-12-09 16:30:12,228 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 12 states. [2018-12-09 16:30:14,458 WARN L180 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2018-12-09 16:30:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:15,011 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-12-09 16:30:15,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 16:30:15,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-12-09 16:30:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:15,013 INFO L225 Difference]: With dead ends: 54 [2018-12-09 16:30:15,013 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 16:30:15,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-12-09 16:30:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 16:30:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-12-09 16:30:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 16:30:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 16:30:15,017 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2018-12-09 16:30:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:15,017 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 16:30:15,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 16:30:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 16:30:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 16:30:15,018 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:15,018 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:15,018 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:15,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash 771770225, now seen corresponding path program 1 times [2018-12-09 16:30:15,019 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:15,019 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:15,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:15,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 16:30:15,081 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:15,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:15,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:15,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:15,089 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2018-12-09 16:30:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:15,106 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-12-09 16:30:15,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:15,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 16:30:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:15,108 INFO L225 Difference]: With dead ends: 45 [2018-12-09 16:30:15,108 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 16:30:15,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 16:30:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 16:30:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 16:30:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-09 16:30:15,111 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 34 [2018-12-09 16:30:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:15,111 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-09 16:30:15,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-09 16:30:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 16:30:15,112 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:15,112 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:15,112 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:15,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash 111236229, now seen corresponding path program 1 times [2018-12-09 16:30:15,112 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:15,112 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:15,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:15,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 16:30:15,177 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:15,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:15,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:15,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:15,187 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2018-12-09 16:30:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:15,207 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-09 16:30:15,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:15,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 16:30:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:15,208 INFO L225 Difference]: With dead ends: 48 [2018-12-09 16:30:15,208 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 16:30:15,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 16:30:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-09 16:30:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 16:30:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-09 16:30:15,211 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 35 [2018-12-09 16:30:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:15,212 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-09 16:30:15,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-09 16:30:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 16:30:15,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:15,212 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:15,212 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:15,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:15,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1035078318, now seen corresponding path program 1 times [2018-12-09 16:30:15,213 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:15,213 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/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 [2018-12-09 16:30:15,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:15,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 16:30:15,421 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:15,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:15,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:30:15,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 16:30:15,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 16:30:15,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 16:30:15,430 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 8 states. [2018-12-09 16:30:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:16,020 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-12-09 16:30:16,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 16:30:16,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-12-09 16:30:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:16,022 INFO L225 Difference]: With dead ends: 50 [2018-12-09 16:30:16,022 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 16:30:16,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:30:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 16:30:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 16:30:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:30:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-09 16:30:16,026 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2018-12-09 16:30:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:16,026 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-09 16:30:16,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 16:30:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-09 16:30:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 16:30:16,027 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:16,027 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:16,027 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:16,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1825331723, now seen corresponding path program 1 times [2018-12-09 16:30:16,028 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:16,028 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:16,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:16,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 16:30:16,093 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:16,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:16,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:16,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:16,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:16,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:16,101 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-12-09 16:30:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:16,118 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-12-09 16:30:16,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:16,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 16:30:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:16,119 INFO L225 Difference]: With dead ends: 50 [2018-12-09 16:30:16,120 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 16:30:16,120 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 16:30:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 16:30:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:30:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-09 16:30:16,123 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2018-12-09 16:30:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:16,123 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-09 16:30:16,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-09 16:30:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 16:30:16,124 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:16,124 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:16,124 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:16,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:16,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1917067970, now seen corresponding path program 1 times [2018-12-09 16:30:16,124 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:16,124 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:16,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:16,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 16:30:16,320 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:16,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:16,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:30:16,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 16:30:16,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 16:30:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 16:30:16,329 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-09 16:30:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:18,753 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-12-09 16:30:18,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 16:30:18,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-12-09 16:30:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:18,755 INFO L225 Difference]: With dead ends: 52 [2018-12-09 16:30:18,756 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 16:30:18,756 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:30:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 16:30:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-12-09 16:30:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:30:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-09 16:30:18,759 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 37 [2018-12-09 16:30:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:18,760 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-09 16:30:18,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 16:30:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-09 16:30:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 16:30:18,760 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:18,761 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:18,761 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:18,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:18,761 INFO L82 PathProgramCache]: Analyzing trace with hash -369279351, now seen corresponding path program 1 times [2018-12-09 16:30:18,761 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:18,762 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:18,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:18,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 16:30:18,824 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:18,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:18,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:18,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:18,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:18,833 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-12-09 16:30:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:18,853 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-09 16:30:18,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:18,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-12-09 16:30:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:18,854 INFO L225 Difference]: With dead ends: 48 [2018-12-09 16:30:18,854 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 16:30:18,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 16:30:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-09 16:30:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 16:30:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-09 16:30:18,857 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 37 [2018-12-09 16:30:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:18,857 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-09 16:30:18,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-09 16:30:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 16:30:18,858 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:18,858 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:18,858 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:18,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2118233482, now seen corresponding path program 1 times [2018-12-09 16:30:18,858 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:18,858 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:18,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:18,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 16:30:19,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:30:19,587 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 16:30:19,854 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 16:30:19,962 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-12-09 16:30:20,168 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 16:30:20,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:30:20,544 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:30:20,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:20,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 16:30:20,977 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:30:21,696 WARN L180 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 16:30:22,771 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 16:30:23,388 WARN L180 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-12-09 16:30:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 16:30:24,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-09 16:30:24,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 22 [2018-12-09 16:30:24,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-09 16:30:24,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-09 16:30:24,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-09 16:30:24,055 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 22 states. [2018-12-09 16:30:25,602 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-09 16:30:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:25,668 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2018-12-09 16:30:25,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 16:30:25,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2018-12-09 16:30:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:25,669 INFO L225 Difference]: With dead ends: 59 [2018-12-09 16:30:25,669 INFO L226 Difference]: Without dead ends: 49 [2018-12-09 16:30:25,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2018-12-09 16:30:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-09 16:30:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-12-09 16:30:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 16:30:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-09 16:30:25,673 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 37 [2018-12-09 16:30:25,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:25,673 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-09 16:30:25,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-09 16:30:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-09 16:30:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 16:30:25,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:25,674 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:25,674 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:25,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:25,674 INFO L82 PathProgramCache]: Analyzing trace with hash 596105266, now seen corresponding path program 1 times [2018-12-09 16:30:25,674 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:25,674 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:25,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:25,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 16:30:25,861 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:25,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:25,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:30:25,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 16:30:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 16:30:25,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 16:30:25,870 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2018-12-09 16:30:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:27,341 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-12-09 16:30:27,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 16:30:27,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-12-09 16:30:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:27,343 INFO L225 Difference]: With dead ends: 51 [2018-12-09 16:30:27,343 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 16:30:27,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:30:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 16:30:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-12-09 16:30:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 16:30:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-09 16:30:27,346 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 38 [2018-12-09 16:30:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:27,346 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-09 16:30:27,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 16:30:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-09 16:30:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 16:30:27,347 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:27,347 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:27,347 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:27,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash -296903738, now seen corresponding path program 1 times [2018-12-09 16:30:27,347 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:27,347 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:27,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:27,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:27,455 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 16:30:27,455 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 16:30:27,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-12-09 16:30:27,495 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-12-09 16:30:27,496 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 16:30:27,509 INFO L478 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 17 treesize of output 13 [2018-12-09 16:30:27,513 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-12-09 16:30:27,513 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 16:30:27,514 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:30:27,517 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 16:30:27,526 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. [2018-12-09 16:30:27,526 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-09 16:30:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 16:30:27,627 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:27,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:27,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 16:30:27,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 16:30:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 16:30:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 16:30:27,639 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2018-12-09 16:30:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:28,463 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-12-09 16:30:28,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 16:30:28,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-12-09 16:30:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:28,465 INFO L225 Difference]: With dead ends: 47 [2018-12-09 16:30:28,465 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 16:30:28,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:30:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 16:30:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-12-09 16:30:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 16:30:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-09 16:30:28,467 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 39 [2018-12-09 16:30:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:28,467 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-09 16:30:28,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 16:30:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-09 16:30:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 16:30:28,468 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:30:28,468 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:30:28,468 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:30:28,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:30:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2093855097, now seen corresponding path program 1 times [2018-12-09 16:30:28,468 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:30:28,468 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-12-09 16:30:28,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:30:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:30:28,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:30:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 16:30:28,534 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:30:28,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:30:28,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:30:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:30:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:30:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:28,542 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2018-12-09 16:30:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:30:28,547 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-09 16:30:28,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:30:28,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-12-09 16:30:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:30:28,548 INFO L225 Difference]: With dead ends: 36 [2018-12-09 16:30:28,548 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 16:30:28,548 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:30:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 16:30:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 16:30:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 16:30:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 16:30:28,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-09 16:30:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:30:28,549 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 16:30:28,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:30:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 16:30:28,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 16:30:28,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 16:30:28,677 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:30:28,677 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 16:30:28,677 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (exists ((v_prenex_24 (_ BitVec 64))) (let ((.cse1 ((_ extract 63 32) v_prenex_24))) (and (not (bvule .cse1 (_ bv2146435071 32))) (= (fp ((_ extract 63 63) v_prenex_24) ((_ extract 62 52) v_prenex_24) ((_ extract 51 0) v_prenex_24)) |fmax_double_#in~x|) (not (= ((_ extract 31 0) v_prenex_24) (_ bv0 32))) (not (bvuge .cse1 (_ bv2147483648 32))))))) (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)))) [2018-12-09 16:30:28,678 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 16:30:28,678 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 84) the Hoare annotation is: true [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 78) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 84) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point L77(lines 77 80) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 84) no Hoare annotation was computed. [2018-12-09 16:30:28,678 INFO L444 ceAbstractionStarter]: At program point L74(line 74) the Hoare annotation is: (and (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) (fp.eq main_~x~0 main_~x~0)) [2018-12-09 16:30:28,679 INFO L448 ceAbstractionStarter]: For program point L74-1(line 74) no Hoare annotation was computed. [2018-12-09 16:30:28,679 INFO L444 ceAbstractionStarter]: At program point L72(line 72) the Hoare annotation is: (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-09 16:30:28,679 INFO L448 ceAbstractionStarter]: For program point L72-1(lines 72 81) no Hoare annotation was computed. [2018-12-09 16:30:28,679 INFO L448 ceAbstractionStarter]: For program point L72-3(lines 72 81) no Hoare annotation was computed. [2018-12-09 16:30:28,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:30:28 BoogieIcfgContainer [2018-12-09 16:30:28,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:30:28,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:30:28,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:30:28,686 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:30:28,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:30:10" (3/4) ... [2018-12-09 16:30:28,688 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 16:30:28,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 16:30:28,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 16:30:28,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 16:30:28,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-09 16:30:28,692 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 16:30:28,695 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-09 16:30:28,695 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 16:30:28,695 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 16:30:28,711 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 16:30:28,725 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ab20cd9e-5832-4498-a38a-ba5c65627659/bin-2019/utaipan/witness.graphml [2018-12-09 16:30:28,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:30:28,726 INFO L168 Benchmark]: Toolchain (without parser) took 18225.22 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 277.3 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -279.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.93 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: Boogie Preprocessor took 18.22 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: RCFGBuilder took 226.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:28,727 INFO L168 Benchmark]: TraceAbstraction took 17765.62 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -133.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:30:28,728 INFO L168 Benchmark]: Witness Printer took 40.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:30:28,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.93 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.22 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 226.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17765.62 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -133.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. SAFE Result, 17.7s OverallTime, 16 OverallIterations, 2 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 572 SDtfs, 229 SDslu, 1537 SDs, 0 SdLazy, 850 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 538 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 41 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 71 HoareAnnotationTreeSize, 18 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 588 ConstructedInterpolants, 63 QuantifiedInterpolants, 100392 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1670 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 66/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...