./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_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_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:05:09,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:05:09,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:05:09,114 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:05:09,114 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:05:09,115 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:05:09,115 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:05:09,117 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:05:09,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:05:09,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:05:09,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:05:09,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:05:09,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:05:09,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:05:09,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:05:09,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:05:09,122 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:05:09,123 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:05:09,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:05:09,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:05:09,125 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:05:09,126 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:05:09,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:05:09,127 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:05:09,127 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:05:09,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:05:09,128 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:05:09,128 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:05:09,129 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:05:09,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:05:09,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:05:09,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:05:09,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:05:09,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:05:09,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:05:09,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:05:09,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 12:05:09,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:05:09,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:05:09,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:05:09,138 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:05:09,138 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:05:09,138 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:05:09,138 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 12:05:09,139 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:05:09,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:05:09,140 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:05:09,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:05:09,140 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:05:09,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:05:09,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:05:09,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:05:09,142 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 12:05:09,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:05:09,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 12:05:09,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 12:05:09,143 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_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-12-09 12:05:09,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:05:09,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:05:09,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:05:09,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:05:09,169 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:05:09,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:09,203 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/aea1617d2/81ede548d3504f009ae686337a94d70a/FLAG602688818 [2018-12-09 12:05:09,491 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:05:09,492 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:09,496 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/aea1617d2/81ede548d3504f009ae686337a94d70a/FLAG602688818 [2018-12-09 12:05:09,935 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/aea1617d2/81ede548d3504f009ae686337a94d70a [2018-12-09 12:05:09,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:05:09,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:05:09,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:05:09,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:05:09,941 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:05:09,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:05:09" (1/1) ... [2018-12-09 12:05:09,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ffd513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:09, skipping insertion in model container [2018-12-09 12:05:09,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:05:09" (1/1) ... [2018-12-09 12:05:09,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:05:09,958 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:05:10,051 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:05:10,053 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:05:10,068 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:05:10,080 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:05:10,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10 WrapperNode [2018-12-09 12:05:10,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:05:10,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:05:10,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:05:10,081 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:05:10,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:05:10,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:05:10,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:05:10,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:05:10,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... [2018-12-09 12:05:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:05:10,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:05:10,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:05:10,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:05:10,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 12:05:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 12:05:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 12:05:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 12:05:10,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:05:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:05:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:05:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 12:05:10,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 12:05:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:05:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:05:10,347 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:05:10,347 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 12:05:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:10 BoogieIcfgContainer [2018-12-09 12:05:10,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:05:10,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:05:10,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:05:10,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:05:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:05:09" (1/3) ... [2018-12-09 12:05:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad556b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:05:10, skipping insertion in model container [2018-12-09 12:05:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:10" (2/3) ... [2018-12-09 12:05:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad556b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:05:10, skipping insertion in model container [2018-12-09 12:05:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:10" (3/3) ... [2018-12-09 12:05:10,355 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:10,363 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:05:10,369 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 12:05:10,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 12:05:10,404 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:05:10,404 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:05:10,404 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:05:10,404 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:05:10,405 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:05:10,405 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:05:10,405 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:05:10,405 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:05:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 12:05:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 12:05:10,419 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:10,420 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] [2018-12-09 12:05:10,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:10,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-12-09 12:05:10,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:05:10,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:10,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,454 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:05:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:10,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:10,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 12:05:10,503 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:05:10,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 12:05:10,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 12:05:10,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:05:10,514 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 12:05:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:10,528 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 12:05:10,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 12:05:10,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 12:05:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:10,534 INFO L225 Difference]: With dead ends: 79 [2018-12-09 12:05:10,534 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 12:05:10,536 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:05:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 12:05:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 12:05:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 12:05:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 12:05:10,560 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 12:05:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:10,561 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 12:05:10,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 12:05:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 12:05:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 12:05:10,562 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:10,562 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] [2018-12-09 12:05:10,562 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:10,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:10,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-12-09 12:05:10,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:05:10,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:10,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:05:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:10,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:10,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:10,609 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:05:10,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:10,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:10,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:10,611 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 12:05:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:10,627 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 12:05:10,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:10,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 12:05:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:10,630 INFO L225 Difference]: With dead ends: 59 [2018-12-09 12:05:10,630 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 12:05:10,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 12:05:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 12:05:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 12:05:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 12:05:10,635 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 12:05:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:10,636 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 12:05:10,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 12:05:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 12:05:10,636 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:10,637 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:05:10,637 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:10,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:10,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-12-09 12:05:10,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:05:10,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:10,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:05:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:10,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:10,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:10,674 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:05:10,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:10,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:10,674 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 12:05:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:10,691 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 12:05:10,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:10,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 12:05:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:10,692 INFO L225 Difference]: With dead ends: 63 [2018-12-09 12:05:10,692 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 12:05:10,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 12:05:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 12:05:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 12:05:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 12:05:10,698 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 12:05:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:10,699 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 12:05:10,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 12:05:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 12:05:10,699 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:10,699 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:05:10,700 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:10,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:10,700 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-12-09 12:05:10,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:05:10,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:10,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:05:10,701 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:05:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:05:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:05:10,747 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 12:05:10,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:05:10 BoogieIcfgContainer [2018-12-09 12:05:10,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 12:05:10,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:05:10,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:05:10,767 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:05:10,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:10" (3/4) ... [2018-12-09 12:05:10,770 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 12:05:10,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:05:10,770 INFO L168 Benchmark]: Toolchain (without parser) took 832.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -82.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,771 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:05:10,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.58 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,772 INFO L168 Benchmark]: Boogie Preprocessor took 50.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,773 INFO L168 Benchmark]: RCFGBuilder took 201.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,773 INFO L168 Benchmark]: TraceAbstraction took 417.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:10,773 INFO L168 Benchmark]: Witness Printer took 3.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:05:10,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 14.58 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 201.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 417.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4293918727] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918727, __fpclassify_double(x)=0, x=0, y=4293918727] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=4293918727, \result=4293918727, x=0, y=4293918727] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4293918727, x=0, y=4293918727] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4293918727, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4293918727] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4293918727, x=0, y=4293918727] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:05:12,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:05:12,042 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:05:12,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:05:12,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:05:12,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:05:12,050 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:05:12,051 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:05:12,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:05:12,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:05:12,053 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:05:12,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:05:12,054 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:05:12,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:05:12,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:05:12,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:05:12,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:05:12,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:05:12,059 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:05:12,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:05:12,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:05:12,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:05:12,063 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:05:12,063 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:05:12,063 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:05:12,064 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:05:12,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:05:12,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:05:12,065 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:05:12,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:05:12,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:05:12,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:05:12,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:05:12,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:05:12,066 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:05:12,067 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:05:12,067 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 12:05:12,077 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:05:12,077 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:05:12,078 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:05:12,078 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:05:12,078 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:05:12,078 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:05:12,079 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:05:12,079 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:05:12,079 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:05:12,079 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:05:12,080 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:05:12,080 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:05:12,080 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:05:12,080 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:05:12,080 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:05:12,080 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:05:12,081 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:05:12,082 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:05:12,082 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:05:12,082 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:05:12,082 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:05:12,082 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:05:12,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:05:12,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 12:05:12,083 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 12:05:12,084 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_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-12-09 12:05:12,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:05:12,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:05:12,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:05:12,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:05:12,113 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:05:12,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:12,149 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/bcffc8c15/45ea5283651b497aa7af5e9b10eb8834/FLAGe8f30cebf [2018-12-09 12:05:12,548 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:05:12,548 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:12,552 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/bcffc8c15/45ea5283651b497aa7af5e9b10eb8834/FLAGe8f30cebf [2018-12-09 12:05:12,560 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/data/bcffc8c15/45ea5283651b497aa7af5e9b10eb8834 [2018-12-09 12:05:12,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:05:12,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:05:12,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:05:12,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:05:12,565 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:05:12,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12, skipping insertion in model container [2018-12-09 12:05:12,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:05:12,582 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:05:12,677 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:05:12,680 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:05:12,697 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:05:12,714 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:05:12,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12 WrapperNode [2018-12-09 12:05:12,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:05:12,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:05:12,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:05:12,715 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:05:12,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:05:12,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:05:12,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:05:12,731 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:05:12,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... [2018-12-09 12:05:12,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:05:12,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:05:12,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:05:12,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:05:12,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:05:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 12:05:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 12:05:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 12:05:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 12:05:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 12:05:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 12:05:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 12:05:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:05:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 12:05:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 12:05:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:05:12,931 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:05:12,966 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:05:13,005 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:05:13,005 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 12:05:13,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:13 BoogieIcfgContainer [2018-12-09 12:05:13,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:05:13,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:05:13,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:05:13,007 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:05:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:05:12" (1/3) ... [2018-12-09 12:05:13,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73230cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:05:13, skipping insertion in model container [2018-12-09 12:05:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:05:12" (2/3) ... [2018-12-09 12:05:13,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73230cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:05:13, skipping insertion in model container [2018-12-09 12:05:13,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:13" (3/3) ... [2018-12-09 12:05:13,009 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-12-09 12:05:13,015 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:05:13,019 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 12:05:13,029 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 12:05:13,046 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 12:05:13,046 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:05:13,046 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:05:13,046 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:05:13,046 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:05:13,046 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:05:13,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:05:13,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:05:13,047 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:05:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 12:05:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 12:05:13,059 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:13,060 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] [2018-12-09 12:05:13,061 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:13,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-12-09 12:05:13,066 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:13,066 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:13,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:13,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:13,132 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:13,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:13,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 12:05:13,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 12:05:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 12:05:13,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:05:13,151 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 12:05:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:13,166 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 12:05:13,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 12:05:13,167 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 12:05:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:13,173 INFO L225 Difference]: With dead ends: 75 [2018-12-09 12:05:13,173 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 12:05:13,176 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:05:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 12:05:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 12:05:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 12:05:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 12:05:13,203 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 12:05:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:13,203 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 12:05:13,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 12:05:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 12:05:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 12:05:13,205 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:13,205 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] [2018-12-09 12:05:13,205 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:13,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-12-09 12:05:13,206 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:13,206 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:13,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:13,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:13,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:13,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:13,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:13,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:13,301 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 12:05:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:13,341 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 12:05:13,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:13,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 12:05:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:13,343 INFO L225 Difference]: With dead ends: 56 [2018-12-09 12:05:13,343 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 12:05:13,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 12:05:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 12:05:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 12:05:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 12:05:13,349 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 12:05:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:13,349 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 12:05:13,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 12:05:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 12:05:13,350 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:13,350 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] [2018-12-09 12:05:13,350 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:13,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:13,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-12-09 12:05:13,350 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:13,350 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:13,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:13,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:13,543 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:13,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:13,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:05:13,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:05:13,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:05:13,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:05:13,551 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 12:05:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:14,564 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-09 12:05:14,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:05:14,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 12:05:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:14,566 INFO L225 Difference]: With dead ends: 63 [2018-12-09 12:05:14,566 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 12:05:14,566 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 12:05:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 12:05:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 12:05:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 12:05:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 12:05:14,570 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-09 12:05:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:14,570 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 12:05:14,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:05:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 12:05:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 12:05:14,571 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:14,571 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] [2018-12-09 12:05:14,571 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:14,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:14,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-12-09 12:05:14,572 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:14,572 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:14,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:14,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:14,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:14,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:14,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:14,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:14,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:14,626 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-09 12:05:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:14,664 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-09 12:05:14,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:14,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 12:05:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:14,666 INFO L225 Difference]: With dead ends: 61 [2018-12-09 12:05:14,666 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 12:05:14,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 12:05:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-09 12:05:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 12:05:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 12:05:14,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-09 12:05:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:14,673 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 12:05:14,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 12:05:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 12:05:14,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:14,674 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:05:14,674 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:14,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-12-09 12:05:14,675 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:14,675 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:14,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:14,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:05:14,809 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:14,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:14,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:05:14,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:05:14,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:05:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:05:14,817 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-09 12:05:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:17,690 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-09 12:05:17,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:05:17,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-09 12:05:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:17,692 INFO L225 Difference]: With dead ends: 62 [2018-12-09 12:05:17,692 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 12:05:17,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 12:05:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 12:05:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-09 12:05:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 12:05:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 12:05:17,696 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-09 12:05:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:17,696 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 12:05:17,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:05:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 12:05:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 12:05:17,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:17,697 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] [2018-12-09 12:05:17,697 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:17,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:17,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-12-09 12:05:17,698 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:17,698 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:17,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:17,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 12:05:17,763 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:17,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:17,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:17,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:17,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:17,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:17,772 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 12:05:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:17,782 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-09 12:05:17,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:17,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 12:05:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:17,783 INFO L225 Difference]: With dead ends: 58 [2018-12-09 12:05:17,783 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 12:05:17,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 12:05:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 12:05:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 12:05:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-09 12:05:17,787 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-09 12:05:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:17,787 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-09 12:05:17,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-09 12:05:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 12:05:17,788 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:17,788 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] [2018-12-09 12:05:17,788 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:17,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-12-09 12:05:17,788 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:17,788 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:17,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:17,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:05:17,983 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:17,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:17,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:05:17,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:05:17,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:05:17,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:05:17,992 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-09 12:05:19,137 WARN L180 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-09 12:05:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:19,172 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-09 12:05:19,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:05:19,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 12:05:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:19,174 INFO L225 Difference]: With dead ends: 63 [2018-12-09 12:05:19,174 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 12:05:19,174 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 12:05:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 12:05:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 12:05:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 12:05:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-09 12:05:19,178 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-09 12:05:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:19,178 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-09 12:05:19,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:05:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-09 12:05:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 12:05:19,179 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:19,179 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] [2018-12-09 12:05:19,179 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:19,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:19,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-12-09 12:05:19,180 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:19,180 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:19,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:19,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 12:05:19,244 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:19,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:19,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 12:05:19,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 12:05:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:05:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:19,253 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-09 12:05:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:19,262 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-09 12:05:19,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 12:05:19,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-09 12:05:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:19,263 INFO L225 Difference]: With dead ends: 59 [2018-12-09 12:05:19,263 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 12:05:19,263 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:05:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 12:05:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 12:05:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 12:05:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-09 12:05:19,266 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-09 12:05:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:19,267 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-09 12:05:19,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 12:05:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-09 12:05:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 12:05:19,268 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:19,268 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] [2018-12-09 12:05:19,268 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:19,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-12-09 12:05:19,268 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:19,268 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:19,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:19,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 12:05:19,398 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:19,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:19,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 12:05:19,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:05:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:05:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 12:05:19,406 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-09 12:05:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:19,547 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-09 12:05:19,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:05:19,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 12:05:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:19,548 INFO L225 Difference]: With dead ends: 57 [2018-12-09 12:05:19,548 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 12:05:19,549 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 12:05:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 12:05:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 12:05:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 12:05:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-09 12:05:19,552 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-09 12:05:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:19,553 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-09 12:05:19,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:05:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-09 12:05:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 12:05:19,554 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:19,554 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] [2018-12-09 12:05:19,554 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:19,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-12-09 12:05:19,555 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:19,555 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:19,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:19,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 12:05:19,683 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:19,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:19,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:05:19,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:05:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:05:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:05:19,692 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-09 12:05:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:20,030 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-09 12:05:20,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:05:20,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 12:05:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:20,031 INFO L225 Difference]: With dead ends: 48 [2018-12-09 12:05:20,031 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 12:05:20,032 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-09 12:05:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 12:05:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-09 12:05:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 12:05:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-09 12:05:20,036 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-09 12:05:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:20,036 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-09 12:05:20,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:05:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-09 12:05:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 12:05:20,037 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:20,037 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] [2018-12-09 12:05:20,037 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:20,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-12-09 12:05:20,038 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:20,038 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:20,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:20,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:05:20,231 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:20,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:20,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:05:20,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:05:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:05:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:05:20,242 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-09 12:05:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:23,058 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-09 12:05:23,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 12:05:23,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-09 12:05:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:23,060 INFO L225 Difference]: With dead ends: 62 [2018-12-09 12:05:23,060 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 12:05:23,060 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 12:05:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 12:05:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 12:05:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 12:05:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-09 12:05:23,062 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-09 12:05:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:23,062 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-09 12:05:23,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:05:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-09 12:05:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 12:05:23,063 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:05:23,063 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:05:23,063 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:05:23,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:05:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-12-09 12:05:23,063 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 12:05:23,063 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 12:05:23,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:05:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:05:23,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:05:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 12:05:23,329 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:05:23,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:05:23,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 12:05:23,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 12:05:23,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 12:05:23,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 12:05:23,338 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-12-09 12:05:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:05:23,896 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-12-09 12:05:23,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 12:05:23,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-09 12:05:23,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:05:23,897 INFO L225 Difference]: With dead ends: 37 [2018-12-09 12:05:23,897 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 12:05:23,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-09 12:05:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 12:05:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 12:05:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 12:05:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 12:05:23,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-09 12:05:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:05:23,898 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:05:23,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 12:05:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 12:05:23,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 12:05:23,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 12:05:24,115 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 18 43) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 12:05:24,117 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L444 ceAbstractionStarter]: At program point L57-2(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 12:05:24,118 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-09 12:05:24,118 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-12-09 12:05:24,119 INFO L448 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-12-09 12:05:24,120 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_10) (_ bv1048575 32))) (= |fmin_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-12-09 12:05:24,120 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-12-09 12:05:24,120 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-09 12:05:24,120 INFO L448 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-12-09 12:05:24,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:05:24 BoogieIcfgContainer [2018-12-09 12:05:24,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 12:05:24,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:05:24,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:05:24,129 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:05:24,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:05:13" (3/4) ... [2018-12-09 12:05:24,131 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 12:05:24,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 12:05:24,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 12:05:24,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-12-09 12:05:24,135 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 12:05:24,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-12-09 12:05:24,139 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-12-09 12:05:24,139 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 12:05:24,139 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 12:05:24,154 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 12:05:24,155 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 12:05:24,166 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7ec49cf7-9390-43c7-8f33-54c0ce1b405c/bin-2019/utaipan/witness.graphml [2018-12-09 12:05:24,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:05:24,167 INFO L168 Benchmark]: Toolchain (without parser) took 11604.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -116.6 MB). Peak memory consumption was 83.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,168 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:05:24,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.28 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.00 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:05:24,168 INFO L168 Benchmark]: Boogie Preprocessor took 50.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,169 INFO L168 Benchmark]: RCFGBuilder took 224.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,169 INFO L168 Benchmark]: TraceAbstraction took 11122.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 101.9 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,169 INFO L168 Benchmark]: Witness Printer took 38.03 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:05:24,171 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 151.28 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.00 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 224.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11122.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 101.9 MB. Max. memory is 11.5 GB. * Witness Printer took 38.03 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 21]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 11.0s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 9.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 182 SDslu, 1592 SDs, 0 SdLazy, 599 SolverSat, 20 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 43044 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...