./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_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_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 01b6390e563edc58f3f7d1f239b082df891f9006 ...................................................................................................................................................................................................................................................................................................................................................................................................... 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_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 01b6390e563edc58f3f7d1f239b082df891f9006 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 06:12:01,081 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 06:12:01,082 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 06:12:01,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 06:12:01,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 06:12:01,090 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 06:12:01,091 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 06:12:01,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 06:12:01,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 06:12:01,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 06:12:01,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 06:12:01,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 06:12:01,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 06:12:01,095 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 06:12:01,096 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 06:12:01,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 06:12:01,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 06:12:01,098 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 06:12:01,099 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 06:12:01,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 06:12:01,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 06:12:01,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 06:12:01,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 06:12:01,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 06:12:01,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 06:12:01,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 06:12:01,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 06:12:01,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 06:12:01,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 06:12:01,105 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 06:12:01,105 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 06:12:01,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 06:12:01,106 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 06:12:01,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 06:12:01,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 06:12:01,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 06:12:01,107 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 06:12:01,116 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 06:12:01,116 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 06:12:01,116 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 06:12:01,116 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 06:12:01,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 06:12:01,117 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 06:12:01,118 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 06:12:01,118 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 06:12:01,119 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 06:12:01,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 06:12:01,119 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 06:12:01,120 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 06:12:01,120 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_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-03 06:12:01,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 06:12:01,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 06:12:01,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 06:12:01,152 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 06:12:01,152 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 06:12:01,152 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:01,198 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/9bcf2505d/11167a2460d94cbf9ec0c6b69a548017/FLAGb49a19845 [2018-12-03 06:12:01,603 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 06:12:01,603 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:01,607 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/9bcf2505d/11167a2460d94cbf9ec0c6b69a548017/FLAGb49a19845 [2018-12-03 06:12:01,614 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/9bcf2505d/11167a2460d94cbf9ec0c6b69a548017 [2018-12-03 06:12:01,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 06:12:01,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 06:12:01,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 06:12:01,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 06:12:01,620 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 06:12:01,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01, skipping insertion in model container [2018-12-03 06:12:01,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 06:12:01,635 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 06:12:01,728 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:12:01,730 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 06:12:01,744 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:12:01,757 INFO L195 MainTranslator]: Completed translation [2018-12-03 06:12:01,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01 WrapperNode [2018-12-03 06:12:01,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 06:12:01,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 06:12:01,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 06:12:01,758 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 06:12:01,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 06:12:01,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 06:12:01,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 06:12:01,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 06:12:01,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... [2018-12-03 06:12:01,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 06:12:01,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 06:12:01,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 06:12:01,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 06:12:01,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-03 06:12:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-03 06:12:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 06:12:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 06:12:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-03 06:12:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-03 06:12:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 06:12:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 06:12:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-03 06:12:01,852 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-03 06:12:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-03 06:12:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 06:12:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 06:12:01,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 06:12:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 06:12:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 06:12:01,972 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 06:12:01,972 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 06:12:01,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:01 BoogieIcfgContainer [2018-12-03 06:12:01,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 06:12:01,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 06:12:01,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 06:12:01,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 06:12:01,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 06:12:01" (1/3) ... [2018-12-03 06:12:01,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:12:01, skipping insertion in model container [2018-12-03 06:12:01,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:01" (2/3) ... [2018-12-03 06:12:01,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:12:01, skipping insertion in model container [2018-12-03 06:12:01,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:01" (3/3) ... [2018-12-03 06:12:01,978 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:01,984 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 06:12:01,988 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 06:12:01,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 06:12:02,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 06:12:02,014 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 06:12:02,014 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 06:12:02,014 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 06:12:02,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 06:12:02,014 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 06:12:02,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 06:12:02,014 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 06:12:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-03 06:12:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 06:12:02,028 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:02,029 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] [2018-12-03 06:12:02,030 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:02,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1777529962, now seen corresponding path program 1 times [2018-12-03 06:12:02,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:12:02,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:02,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,064 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:12:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:02,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:02,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 06:12:02,116 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:12:02,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 06:12:02,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 06:12:02,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 06:12:02,127 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-03 06:12:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:02,140 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-03 06:12:02,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 06:12:02,141 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-03 06:12:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:02,146 INFO L225 Difference]: With dead ends: 71 [2018-12-03 06:12:02,146 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 06:12:02,148 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 [2018-12-03 06:12:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 06:12:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-03 06:12:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-03 06:12:02,172 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-03 06:12:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:02,172 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-03 06:12:02,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 06:12:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-03 06:12:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 06:12:02,173 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:02,173 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] [2018-12-03 06:12:02,174 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:02,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1782564235, now seen corresponding path program 1 times [2018-12-03 06:12:02,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:12:02,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:02,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,175 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:12:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:02,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:02,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:02,233 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:12:02,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:02,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:02,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:02,235 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-03 06:12:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:02,260 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-03 06:12:02,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:02,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 06:12:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:02,261 INFO L225 Difference]: With dead ends: 51 [2018-12-03 06:12:02,261 INFO L226 Difference]: Without dead ends: 40 [2018-12-03 06:12:02,262 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 [2018-12-03 06:12:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-03 06:12:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-03 06:12:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 06:12:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-03 06:12:02,267 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-03 06:12:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:02,267 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-03 06:12:02,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-03 06:12:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-03 06:12:02,268 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:02,268 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] [2018-12-03 06:12:02,268 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:02,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash 105963089, now seen corresponding path program 1 times [2018-12-03 06:12:02,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:12:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,269 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:12:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:02,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:02,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:02,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 06:12:02,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:02,306 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-03 06:12:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:02,323 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-03 06:12:02,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:02,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-03 06:12:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:02,324 INFO L225 Difference]: With dead ends: 55 [2018-12-03 06:12:02,324 INFO L226 Difference]: Without dead ends: 44 [2018-12-03 06:12:02,324 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 [2018-12-03 06:12:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-03 06:12:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-03 06:12:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-03 06:12:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-03 06:12:02,327 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-03 06:12:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:02,328 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-03 06:12:02,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-03 06:12:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-03 06:12:02,328 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:02,328 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] [2018-12-03 06:12:02,328 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:02,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:02,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1613514898, now seen corresponding path program 1 times [2018-12-03 06:12:02,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 06:12:02,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:02,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 06:12:02,329 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 06:12:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:12:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 06:12:02,373 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 06:12:02,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:12:02 BoogieIcfgContainer [2018-12-03 06:12:02,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 06:12:02,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 06:12:02,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 06:12:02,391 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 06:12:02,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:01" (3/4) ... [2018-12-03 06:12:02,393 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-03 06:12:02,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 06:12:02,393 INFO L168 Benchmark]: Toolchain (without parser) took 777.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 952.5 MB in the beginning and 1.1 GB in the end (delta: -114.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,394 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:12:02,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.99 ms. Allocated memory is still 1.0 GB. Free memory was 952.5 MB in the beginning and 941.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.50 ms. Allocated memory is still 1.0 GB. Free memory was 941.8 MB in the beginning and 936.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,395 INFO L168 Benchmark]: Boogie Preprocessor took 47.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 936.4 MB in the beginning and 1.1 GB in the end (delta: -198.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,396 INFO L168 Benchmark]: RCFGBuilder took 152.15 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,396 INFO L168 Benchmark]: TraceAbstraction took 417.05 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:02,396 INFO L168 Benchmark]: Witness Printer took 2.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:12:02,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.99 ms. Allocated memory is still 1.0 GB. Free memory was 952.5 MB in the beginning and 941.8 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 941.8 MB in the beginning and 936.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 936.4 MB in the beginning and 1.1 GB in the end (delta: -198.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 152.15 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 417.05 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [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)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967302, y=4294967303] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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 [2018-12-03 06:12:03,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 06:12:03,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 06:12:03,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 06:12:03,774 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 06:12:03,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 06:12:03,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 06:12:03,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 06:12:03,778 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 06:12:03,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 06:12:03,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 06:12:03,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 06:12:03,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 06:12:03,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 06:12:03,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 06:12:03,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 06:12:03,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 06:12:03,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 06:12:03,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 06:12:03,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 06:12:03,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 06:12:03,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 06:12:03,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 06:12:03,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 06:12:03,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 06:12:03,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 06:12:03,791 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 06:12:03,791 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 06:12:03,792 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 06:12:03,793 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 06:12:03,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 06:12:03,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 06:12:03,793 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 06:12:03,793 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 06:12:03,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 06:12:03,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 06:12:03,795 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 06:12:03,805 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 06:12:03,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 06:12:03,806 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 06:12:03,806 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 06:12:03,806 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 06:12:03,807 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 06:12:03,807 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 06:12:03,807 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 06:12:03,807 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 06:12:03,807 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 06:12:03,807 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 06:12:03,808 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 06:12:03,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 06:12:03,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 06:12:03,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 06:12:03,810 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 06:12:03,810 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_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-03 06:12:03,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 06:12:03,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 06:12:03,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 06:12:03,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 06:12:03,843 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 06:12:03,843 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:03,878 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/a6580ab06/f31d742bef5b4357a8f513fb91e50ee5/FLAG09c8be7b2 [2018-12-03 06:12:04,218 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 06:12:04,218 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:04,222 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/a6580ab06/f31d742bef5b4357a8f513fb91e50ee5/FLAG09c8be7b2 [2018-12-03 06:12:04,617 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/data/a6580ab06/f31d742bef5b4357a8f513fb91e50ee5 [2018-12-03 06:12:04,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 06:12:04,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 06:12:04,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 06:12:04,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 06:12:04,627 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 06:12:04,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f976d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04, skipping insertion in model container [2018-12-03 06:12:04,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 06:12:04,644 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 06:12:04,735 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:12:04,737 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 06:12:04,753 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 06:12:04,769 INFO L195 MainTranslator]: Completed translation [2018-12-03 06:12:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04 WrapperNode [2018-12-03 06:12:04,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 06:12:04,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 06:12:04,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 06:12:04,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 06:12:04,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 06:12:04,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 06:12:04,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 06:12:04,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 06:12:04,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... [2018-12-03 06:12:04,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 06:12:04,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 06:12:04,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 06:12:04,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 06:12:04,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-03 06:12:04,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-03 06:12:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-03 06:12:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 06:12:04,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 06:12:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-03 06:12:04,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-03 06:12:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 06:12:04,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 06:12:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-03 06:12:04,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-03 06:12:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 06:12:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-03 06:12:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 06:12:04,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 06:12:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 06:12:04,979 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 06:12:05,035 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 06:12:05,035 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 06:12:05,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:05 BoogieIcfgContainer [2018-12-03 06:12:05,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 06:12:05,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 06:12:05,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 06:12:05,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 06:12:05,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 06:12:04" (1/3) ... [2018-12-03 06:12:05,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506a735d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:12:05, skipping insertion in model container [2018-12-03 06:12:05,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 06:12:04" (2/3) ... [2018-12-03 06:12:05,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506a735d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:12:05, skipping insertion in model container [2018-12-03 06:12:05,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:05" (3/3) ... [2018-12-03 06:12:05,040 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-03 06:12:05,045 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 06:12:05,049 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 06:12:05,058 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 06:12:05,073 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 06:12:05,074 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 06:12:05,074 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 06:12:05,074 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 06:12:05,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 06:12:05,074 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 06:12:05,074 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 06:12:05,074 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 06:12:05,074 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 06:12:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-03 06:12:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 06:12:05,087 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,088 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] [2018-12-03 06:12:05,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash 656433164, now seen corresponding path program 1 times [2018-12-03 06:12:05,096 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,097 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,156 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 06:12:05,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 06:12:05,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 06:12:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 06:12:05,177 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-03 06:12:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:05,189 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-03 06:12:05,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 06:12:05,190 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-03 06:12:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:05,195 INFO L225 Difference]: With dead ends: 65 [2018-12-03 06:12:05,196 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 06:12:05,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 06:12:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 06:12:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-03 06:12:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 06:12:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-03 06:12:05,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-03 06:12:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:05,231 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-03 06:12:05,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 06:12:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-03 06:12:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-03 06:12:05,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,233 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] [2018-12-03 06:12:05,233 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 123034921, now seen corresponding path program 1 times [2018-12-03 06:12:05,234 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,234 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,300 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:05,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:05,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:05,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:05,309 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-03 06:12:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:05,348 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-03 06:12:05,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:05,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-03 06:12:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:05,351 INFO L225 Difference]: With dead ends: 46 [2018-12-03 06:12:05,351 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 06:12:05,351 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:05,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 06:12:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-03 06:12:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-03 06:12:05,356 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-03 06:12:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:05,356 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-03 06:12:05,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-03 06:12:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-03 06:12:05,357 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,357 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] [2018-12-03 06:12:05,357 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1807372911, now seen corresponding path program 1 times [2018-12-03 06:12:05,358 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,358 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,416 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:05,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:05,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:05,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:05,423 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-03 06:12:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:05,452 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-03 06:12:05,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:05,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-03 06:12:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:05,453 INFO L225 Difference]: With dead ends: 49 [2018-12-03 06:12:05,453 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 06:12:05,453 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 [2018-12-03 06:12:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 06:12:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-03 06:12:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-03 06:12:05,457 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-03 06:12:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:05,458 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-03 06:12:05,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-03 06:12:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 06:12:05,458 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,459 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] [2018-12-03 06:12:05,459 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1308631021, now seen corresponding path program 1 times [2018-12-03 06:12:05,459 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,459 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,513 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:05,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:05,521 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-03 06:12:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:05,558 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-03 06:12:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:05,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-03 06:12:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:05,559 INFO L225 Difference]: With dead ends: 49 [2018-12-03 06:12:05,559 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 06:12:05,560 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 [2018-12-03 06:12:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 06:12:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-03 06:12:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-03 06:12:05,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-03 06:12:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:05,564 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-03 06:12:05,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-03 06:12:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-03 06:12:05,564 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,564 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] [2018-12-03 06:12:05,565 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1853889587, now seen corresponding path program 1 times [2018-12-03 06:12:05,565 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,565 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:05,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:05,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:05,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:05,625 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-03 06:12:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:05,652 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-03 06:12:05,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:05,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-03 06:12:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:05,653 INFO L225 Difference]: With dead ends: 49 [2018-12-03 06:12:05,653 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 06:12:05,654 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 [2018-12-03 06:12:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 06:12:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-03 06:12:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-03 06:12:05,657 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-03 06:12:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:05,657 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-03 06:12:05,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-03 06:12:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-03 06:12:05,658 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:05,658 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] [2018-12-03 06:12:05,658 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:05,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:05,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1560486580, now seen corresponding path program 1 times [2018-12-03 06:12:05,659 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:05,659 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:05,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:05,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 06:12:05,809 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:05,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:05,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-03 06:12:05,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 06:12:05,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 06:12:05,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-03 06:12:05,817 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-03 06:12:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:06,224 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-03 06:12:06,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 06:12:06,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-03 06:12:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:06,225 INFO L225 Difference]: With dead ends: 43 [2018-12-03 06:12:06,225 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 06:12:06,225 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-03 06:12:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 06:12:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-03 06:12:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 06:12:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-03 06:12:06,229 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-03 06:12:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:06,229 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-03 06:12:06,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 06:12:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-03 06:12:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-03 06:12:06,230 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:06,230 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] [2018-12-03 06:12:06,230 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:06,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -132849900, now seen corresponding path program 1 times [2018-12-03 06:12:06,231 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:06,231 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:06,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:06,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-03 06:12:06,300 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:06,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:06,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:06,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:06,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:06,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:06,308 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-03 06:12:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:06,319 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-03 06:12:06,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:06,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-03 06:12:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:06,321 INFO L225 Difference]: With dead ends: 46 [2018-12-03 06:12:06,321 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 06:12:06,321 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 06:12:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-03 06:12:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-03 06:12:06,325 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-03 06:12:06,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:06,326 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-03 06:12:06,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-03 06:12:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-03 06:12:06,327 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:06,327 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] [2018-12-03 06:12:06,327 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:06,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1974935426, now seen corresponding path program 1 times [2018-12-03 06:12:06,328 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:06,328 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:06,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:06,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-03 06:12:06,397 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:06,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:06,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:06,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:06,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:06,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:06,406 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-03 06:12:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:06,418 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-03 06:12:06,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:06,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-03 06:12:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:06,419 INFO L225 Difference]: With dead ends: 49 [2018-12-03 06:12:06,420 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 06:12:06,420 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 [2018-12-03 06:12:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 06:12:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-03 06:12:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-03 06:12:06,423 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-03 06:12:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:06,423 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-03 06:12:06,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-03 06:12:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-03 06:12:06,424 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:06,424 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] [2018-12-03 06:12:06,424 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:06,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1277705297, now seen corresponding path program 1 times [2018-12-03 06:12:06,424 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:06,424 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:06,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:06,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-03 06:12:06,601 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:06,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:06,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-03 06:12:06,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 06:12:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 06:12:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-03 06:12:06,609 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-03 06:12:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:06,899 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-03 06:12:06,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 06:12:06,899 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-03 06:12:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:06,900 INFO L225 Difference]: With dead ends: 44 [2018-12-03 06:12:06,900 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 06:12:06,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-03 06:12:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 06:12:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-03 06:12:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-03 06:12:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-03 06:12:06,903 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-03 06:12:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:06,903 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-03 06:12:06,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 06:12:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-03 06:12:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-03 06:12:06,904 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:06,904 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] [2018-12-03 06:12:06,904 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:06,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash 576640719, now seen corresponding path program 1 times [2018-12-03 06:12:06,905 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:06,905 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:06,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:06,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-03 06:12:07,086 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:07,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:07,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 06:12:07,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 06:12:07,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 06:12:07,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 06:12:07,094 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-03 06:12:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:07,416 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-03 06:12:07,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 06:12:07,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-03 06:12:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:07,418 INFO L225 Difference]: With dead ends: 46 [2018-12-03 06:12:07,418 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 06:12:07,419 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 06:12:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 06:12:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-03 06:12:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 06:12:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-03 06:12:07,421 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-03 06:12:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:07,421 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-03 06:12:07,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 06:12:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-03 06:12:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-03 06:12:07,422 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:07,422 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] [2018-12-03 06:12:07,422 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:07,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -123656616, now seen corresponding path program 1 times [2018-12-03 06:12:07,423 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:07,423 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:07,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:07,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-03 06:12:07,485 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:07,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:07,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:07,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:07,494 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-03 06:12:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:07,509 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-03 06:12:07,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:07,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-03 06:12:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:07,510 INFO L225 Difference]: With dead ends: 46 [2018-12-03 06:12:07,511 INFO L226 Difference]: Without dead ends: 35 [2018-12-03 06:12:07,511 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 [2018-12-03 06:12:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-03 06:12:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-03 06:12:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 06:12:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-03 06:12:07,513 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-03 06:12:07,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:07,513 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-03 06:12:07,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-03 06:12:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 06:12:07,514 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:07,514 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] [2018-12-03 06:12:07,514 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:07,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash 257799618, now seen corresponding path program 1 times [2018-12-03 06:12:07,515 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:07,515 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:07,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:07,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-03 06:12:07,578 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:07,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:07,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 06:12:07,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 06:12:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 06:12:07,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 06:12:07,586 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-03 06:12:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:07,603 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-03 06:12:07,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 06:12:07,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-03 06:12:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:07,605 INFO L225 Difference]: With dead ends: 46 [2018-12-03 06:12:07,605 INFO L226 Difference]: Without dead ends: 35 [2018-12-03 06:12:07,605 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 [2018-12-03 06:12:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-03 06:12:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-03 06:12:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 06:12:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-03 06:12:07,607 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-03 06:12:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:07,608 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-03 06:12:07,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 06:12:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-03 06:12:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-03 06:12:07,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 06:12:07,608 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] [2018-12-03 06:12:07,608 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 06:12:07,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 06:12:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash -35603389, now seen corresponding path program 1 times [2018-12-03 06:12:07,609 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-03 06:12:07,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/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 [2018-12-03 06:12:07,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 06:12:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 06:12:07,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 06:12:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-03 06:12:07,767 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 06:12:07,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 06:12:07,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-03 06:12:07,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 06:12:07,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 06:12:07,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-03 06:12:07,775 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-03 06:12:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 06:12:07,994 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-03 06:12:07,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 06:12:07,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-03 06:12:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 06:12:07,994 INFO L225 Difference]: With dead ends: 33 [2018-12-03 06:12:07,994 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 06:12:07,994 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-03 06:12:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 06:12:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 06:12:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 06:12:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 06:12:07,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-03 06:12:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 06:12:07,995 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 06:12:07,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 06:12:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 06:12:07,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 06:12:07,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 06:12:08,124 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L451 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: true [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-03 06:12:08,124 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-12-03 06:12:08,124 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-03 06:12:08,125 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-12-03 06:12:08,125 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|)) [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-12-03 06:12:08,125 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-03 06:12:08,126 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 76) the Hoare annotation is: true [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 76) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 76) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L444 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point L71-1(lines 71 74) no Hoare annotation was computed. [2018-12-03 06:12:08,126 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-12-03 06:12:08,126 INFO L448 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-12-03 06:12:08,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:12:08 BoogieIcfgContainer [2018-12-03 06:12:08,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 06:12:08,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 06:12:08,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 06:12:08,130 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 06:12:08,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:12:05" (3/4) ... [2018-12-03 06:12:08,133 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 06:12:08,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-03 06:12:08,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-03 06:12:08,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 06:12:08,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-03 06:12:08,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 06:12:08,141 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-03 06:12:08,141 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-03 06:12:08,142 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 06:12:08,169 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_67a7139d-1d1d-435b-ba2a-348a1c9e81db/bin-2019/utaipan/witness.graphml [2018-12-03 06:12:08,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 06:12:08,170 INFO L168 Benchmark]: Toolchain (without parser) took 3549.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -225.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:12:08,171 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-03 06:12:08,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.31 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. [2018-12-03 06:12:08,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.80 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. [2018-12-03 06:12:08,172 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. [2018-12-03 06:12:08,172 INFO L168 Benchmark]: RCFGBuilder took 232.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-03 06:12:08,172 INFO L168 Benchmark]: TraceAbstraction took 3093.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -83.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:12:08,172 INFO L168 Benchmark]: Witness Printer took 39.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 06:12:08,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 146.31 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 14.80 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 232.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3093.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -83.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 39.45 ms. Allocated memory is still 1.2 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: 72]: 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: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21655 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...