./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b_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_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fc40f01120ca51e77cbf79a7824b0aac7011828 ............................................................................................................................................................................................................................................................................................................ 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_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fc40f01120ca51e77cbf79a7824b0aac7011828 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:47:24,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:47:24,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:47:24,069 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:47:24,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:47:24,070 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:47:24,071 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:47:24,071 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:47:24,072 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:47:24,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:47:24,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:47:24,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:47:24,073 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:47:24,074 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:47:24,074 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:47:24,075 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:47:24,075 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:47:24,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:47:24,077 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:47:24,077 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:47:24,078 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:47:24,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:47:24,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:47:24,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:47:24,080 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:47:24,080 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:47:24,081 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:47:24,081 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:47:24,081 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:47:24,082 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:47:24,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:47:24,082 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:47:24,082 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:47:24,082 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:47:24,083 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:47:24,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:47:24,083 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 23:47:24,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:47:24,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:47:24,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 23:47:24,090 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 23:47:24,091 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 23:47:24,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:47:24,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 23:47:24,092 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 23:47:24,092 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:47:24,093 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 23:47:24,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 23:47:24,093 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_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fc40f01120ca51e77cbf79a7824b0aac7011828 [2018-12-08 23:47:24,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:47:24,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:47:24,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:47:24,126 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:47:24,126 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:47:24,127 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:24,172 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/7832249eb/08de5cd964bd4b0bb93d3b780d941ab6/FLAGe891362f0 [2018-12-08 23:47:24,462 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:47:24,463 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:24,466 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/7832249eb/08de5cd964bd4b0bb93d3b780d941ab6/FLAGe891362f0 [2018-12-08 23:47:24,474 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/7832249eb/08de5cd964bd4b0bb93d3b780d941ab6 [2018-12-08 23:47:24,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:47:24,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:47:24,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:24,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:47:24,480 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:47:24,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97cb65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24, skipping insertion in model container [2018-12-08 23:47:24,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:47:24,496 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:47:24,590 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:24,592 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:47:24,610 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:24,651 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:47:24,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24 WrapperNode [2018-12-08 23:47:24,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:24,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:24,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:47:24,652 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:47:24,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:24,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:47:24,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:47:24,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:47:24,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... [2018-12-08 23:47:24,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:47:24,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:47:24,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:47:24,685 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:47:24,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-08 23:47:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 23:47:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 23:47:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 23:47:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 23:47:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-12-08 23:47:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-12-08 23:47:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:47:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:47:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 23:47:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 23:47:24,864 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:47:24,864 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-08 23:47:24,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:24 BoogieIcfgContainer [2018-12-08 23:47:24,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:47:24,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 23:47:24,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 23:47:24,866 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 23:47:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:47:24" (1/3) ... [2018-12-08 23:47:24,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dac3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:47:24, skipping insertion in model container [2018-12-08 23:47:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:24" (2/3) ... [2018-12-08 23:47:24,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dac3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:47:24, skipping insertion in model container [2018-12-08 23:47:24,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:24" (3/3) ... [2018-12-08 23:47:24,868 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:24,874 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 23:47:24,879 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 23:47:24,888 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 23:47:24,905 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:47:24,905 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 23:47:24,905 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 23:47:24,905 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 23:47:24,905 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:47:24,906 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:47:24,906 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 23:47:24,906 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:47:24,906 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 23:47:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-08 23:47:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 23:47:24,920 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:24,921 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:47:24,922 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:24,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-12-08 23:47:24,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:24,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:24,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:24,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:24,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:24,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:24,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:47:24,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 23:47:25,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 23:47:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:47:25,007 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-08 23:47:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:25,020 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-12-08 23:47:25,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 23:47:25,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-12-08 23:47:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:25,026 INFO L225 Difference]: With dead ends: 78 [2018-12-08 23:47:25,026 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 23:47:25,028 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 [2018-12-08 23:47:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 23:47:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-08 23:47:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-08 23:47:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-08 23:47:25,049 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-12-08 23:47:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:25,050 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-08 23:47:25,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 23:47:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-08 23:47:25,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 23:47:25,050 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:25,050 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] [2018-12-08 23:47:25,050 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:25,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:25,051 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-12-08 23:47:25,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:25,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:25,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:25,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:25,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:25,100 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 23:47:25,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:47:25 BoogieIcfgContainer [2018-12-08 23:47:25,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 23:47:25,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:47:25,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:47:25,117 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:47:25,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:24" (3/4) ... [2018-12-08 23:47:25,120 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 23:47:25,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:47:25,120 INFO L168 Benchmark]: Toolchain (without parser) took 643.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -99.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,121 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-12-08 23:47:25,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.21 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,122 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,122 INFO L168 Benchmark]: RCFGBuilder took 179.09 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,123 INFO L168 Benchmark]: TraceAbstraction took 252.31 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:25,123 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:25,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 173.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.21 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.11 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 179.09 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 252.31 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=6442450946] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=6442450946, x=6442450946] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=6442450946, \result=6442450946, exponent_less_1023=0, lsw=0, msw=-2147483648, x=6442450946] [L87] RET, EXPR round_double(x) VAL [round_double(x)=6442450946, x=6442450946] [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=6442450946, res == -0.0 && __signbit_double(res) == 1=0, x=6442450946] [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() VAL [res=6442450946, x=6442450946] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:47:26,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:47:26,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:47:26,399 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:47:26,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:47:26,399 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:47:26,400 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:47:26,401 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:47:26,402 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:47:26,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:47:26,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:47:26,404 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:47:26,405 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:47:26,405 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:47:26,406 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:47:26,406 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:47:26,407 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:47:26,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:47:26,409 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:47:26,410 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:47:26,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:47:26,411 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:47:26,412 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:47:26,412 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:47:26,412 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:47:26,412 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:47:26,413 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:47:26,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:47:26,414 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:47:26,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:47:26,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:47:26,415 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:47:26,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:47:26,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:47:26,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:47:26,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:47:26,417 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-08 23:47:26,426 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:47:26,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:47:26,427 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 23:47:26,427 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 23:47:26,428 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 23:47:26,428 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 23:47:26,428 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 23:47:26,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 23:47:26,429 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 23:47:26,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:47:26,430 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:47:26,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 23:47:26,431 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 23:47:26,432 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 23:47:26,432 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_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fc40f01120ca51e77cbf79a7824b0aac7011828 [2018-12-08 23:47:26,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:47:26,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:47:26,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:47:26,467 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:47:26,467 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:47:26,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:26,504 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/37a30a290/2f4c368d06564c52b684130b4a9c083a/FLAG32e092075 [2018-12-08 23:47:26,828 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:47:26,829 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/sv-benchmarks/c/float-newlib/double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:26,833 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/37a30a290/2f4c368d06564c52b684130b4a9c083a/FLAG32e092075 [2018-12-08 23:47:26,841 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/data/37a30a290/2f4c368d06564c52b684130b4a9c083a [2018-12-08 23:47:26,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:47:26,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:47:26,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:26,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:47:26,847 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:47:26,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:26,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e2f300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26, skipping insertion in model container [2018-12-08 23:47:26,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:26,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:47:26,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:47:26,960 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:26,963 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:47:26,982 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:26,998 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:47:26,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26 WrapperNode [2018-12-08 23:47:26,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:26,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:26,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:47:26,999 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:47:27,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:27,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:47:27,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:47:27,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:47:27,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... [2018-12-08 23:47:27,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:47:27,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:47:27,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:47:27,070 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:47:27,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:47:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-08 23:47:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 23:47:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 23:47:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-12-08 23:47:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-12-08 23:47:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:47:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:47:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 23:47:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 23:47:27,232 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:47:27,332 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 23:47:27,345 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:47:27,346 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-08 23:47:27,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:27 BoogieIcfgContainer [2018-12-08 23:47:27,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:47:27,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 23:47:27,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 23:47:27,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 23:47:27,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:47:26" (1/3) ... [2018-12-08 23:47:27,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c2002f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:47:27, skipping insertion in model container [2018-12-08 23:47:27,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:26" (2/3) ... [2018-12-08 23:47:27,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c2002f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:47:27, skipping insertion in model container [2018-12-08 23:47:27,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:27" (3/3) ... [2018-12-08 23:47:27,350 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b_true-unreach-call.c [2018-12-08 23:47:27,355 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 23:47:27,360 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 23:47:27,368 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 23:47:27,384 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:47:27,385 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 23:47:27,385 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 23:47:27,385 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 23:47:27,385 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:47:27,385 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:47:27,385 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 23:47:27,385 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:47:27,385 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 23:47:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-08 23:47:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 23:47:27,398 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:27,398 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:47:27,399 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:27,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-12-08 23:47:27,405 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:47:27,405 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-08 23:47:27,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:27,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:27,462 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:47:27,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:27,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:47:27,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 23:47:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 23:47:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:47:27,481 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-08 23:47:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:27,494 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-12-08 23:47:27,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 23:47:27,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-12-08 23:47:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:27,500 INFO L225 Difference]: With dead ends: 78 [2018-12-08 23:47:27,500 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 23:47:27,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 23:47:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 23:47:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-08 23:47:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-08 23:47:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-08 23:47:27,524 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-12-08 23:47:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:27,524 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-08 23:47:27,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 23:47:27,524 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-08 23:47:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 23:47:27,525 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:27,525 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] [2018-12-08 23:47:27,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:27,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-12-08 23:47:27,525 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:47:27,525 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-08 23:47:27,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:27,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:27,683 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:47:27,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:27,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 23:47:27,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 23:47:27,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 23:47:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 23:47:27,696 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 7 states. [2018-12-08 23:47:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:28,875 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-12-08 23:47:28,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 23:47:28,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-08 23:47:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:28,877 INFO L225 Difference]: With dead ends: 65 [2018-12-08 23:47:28,877 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 23:47:28,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-08 23:47:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 23:47:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 23:47:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 23:47:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-08 23:47:28,881 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2018-12-08 23:47:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:28,881 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-08 23:47:28,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 23:47:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-08 23:47:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-08 23:47:28,881 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:28,881 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] [2018-12-08 23:47:28,882 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:28,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1090994049, now seen corresponding path program 1 times [2018-12-08 23:47:28,882 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:47:28,882 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-08 23:47:28,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:28,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:29,007 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:47:29,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:29,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 23:47:29,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 23:47:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 23:47:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 23:47:29,020 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 7 states. [2018-12-08 23:47:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:30,493 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-12-08 23:47:30,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 23:47:30,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-12-08 23:47:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:30,496 INFO L225 Difference]: With dead ends: 52 [2018-12-08 23:47:30,496 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 23:47:30,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-12-08 23:47:30,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 23:47:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 23:47:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 23:47:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-12-08 23:47:30,499 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2018-12-08 23:47:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:30,499 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-12-08 23:47:30,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 23:47:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-12-08 23:47:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-08 23:47:30,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:30,500 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] [2018-12-08 23:47:30,500 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:30,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1792058627, now seen corresponding path program 1 times [2018-12-08 23:47:30,501 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:47:30,501 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-08 23:47:30,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:30,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:30,564 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2018-12-08 23:47:30,566 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2018-12-08 23:47:30,580 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-12-08 23:47:30,581 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,584 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,586 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,588 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-08 23:47:30,588 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:51, output treesize:21 [2018-12-08 23:47:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:30,639 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:47:30,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:30,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 23:47:30,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 23:47:30,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 23:47:30,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-08 23:47:30,647 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2018-12-08 23:47:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:30,801 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2018-12-08 23:47:30,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 23:47:30,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-12-08 23:47:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:30,802 INFO L225 Difference]: With dead ends: 36 [2018-12-08 23:47:30,802 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 23:47:30,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-12-08 23:47:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 23:47:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 23:47:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 23:47:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-12-08 23:47:30,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 24 [2018-12-08 23:47:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:30,805 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-12-08 23:47:30,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 23:47:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-12-08 23:47:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 23:47:30,805 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:47:30,805 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:47:30,805 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 23:47:30,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1819196168, now seen corresponding path program 1 times [2018-12-08 23:47:30,806 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 23:47:30,806 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-08 23:47:30,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:30,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:30,915 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-12-08 23:47:30,918 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2018-12-08 23:47:30,932 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2018-12-08 23:47:30,933 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,937 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,940 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:47:30,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-08 23:47:30,952 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:64, output treesize:34 [2018-12-08 23:47:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:31,368 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 23:47:31,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:47:31,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-12-08 23:47:31,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-08 23:47:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-08 23:47:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-12-08 23:47:31,377 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 15 states. [2018-12-08 23:47:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:47:32,852 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-12-08 23:47:32,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 23:47:32,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-12-08 23:47:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:47:32,853 INFO L225 Difference]: With dead ends: 33 [2018-12-08 23:47:32,853 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 23:47:32,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-12-08 23:47:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 23:47:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 23:47:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 23:47:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 23:47:32,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-12-08 23:47:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:47:32,854 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:47:32,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-08 23:47:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 23:47:32,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 23:47:32,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 23:47:32,907 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 23:47:32,907 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 56) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point round_doubleFINAL(lines 17 64) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L52(lines 52 53) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L451 ceAbstractionStarter]: At program point round_doubleENTRY(lines 17 64) the Hoare annotation is: true [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 62) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 17 64) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L57-2(lines 57 62) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point round_doubleEXIT(lines 17 64) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (= |round_double_#in~x| round_double_~x) [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 20 25) no Hoare annotation was computed. [2018-12-08 23:47:32,908 INFO L448 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 56) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 45) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L30-2(lines 30 31) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 66 76) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 66 76) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 66 76) the Hoare annotation is: true [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 69 73) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L444 ceAbstractionStarter]: At program point L69-2(lines 69 73) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point L69-3(lines 69 73) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 23:47:32,909 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 23:47:32,909 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 23:47:32,909 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 78 96) the Hoare annotation is: true [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point L90(line 90) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L444 ceAbstractionStarter]: At program point L90-1(line 90) the Hoare annotation is: (and (exists ((|v_q#valueAsBitvector_5| (_ BitVec 64)) (round_double_~lsw~0 (_ BitVec 32))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_5|) ((_ extract 62 52) |v_q#valueAsBitvector_5|) ((_ extract 51 0) |v_q#valueAsBitvector_5|)) (fp.neg (_ +zero 11 53))) (= (let ((.cse0 (concat (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_q#valueAsBitvector_5|)) round_double_~lsw~0))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) main_~res~0))) |main_#t~short10| (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 78 96) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point L90-2(line 90) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L444 ceAbstractionStarter]: At program point L87(line 87) the Hoare annotation is: (= main_~x~0 (fp.neg (_ +zero 11 53))) [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point L87-1(line 87) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point L90-4(lines 90 93) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 78 96) no Hoare annotation was computed. [2018-12-08 23:47:32,910 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2018-12-08 23:47:32,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:47:32 BoogieIcfgContainer [2018-12-08 23:47:32,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 23:47:32,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:47:32,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:47:32,919 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:47:32,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:27" (3/4) ... [2018-12-08 23:47:32,922 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 23:47:32,926 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 23:47:32,926 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-12-08 23:47:32,926 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-12-08 23:47:32,926 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 23:47:32,929 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-08 23:47:32,929 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-08 23:47:32,929 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 23:47:32,946 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-08 23:47:32,946 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-08 23:47:32,964 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b92104bc-bfd8-42ef-92bb-df6f35d05845/bin-2019/uautomizer/witness.graphml [2018-12-08 23:47:32,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:47:32,964 INFO L168 Benchmark]: Toolchain (without parser) took 6120.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.4 MB in the beginning and 852.9 MB in the end (delta: 90.5 MB). Peak memory consumption was 235.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,965 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:32,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.55 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:32,966 INFO L168 Benchmark]: Boogie Preprocessor took 54.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,966 INFO L168 Benchmark]: RCFGBuilder took 275.90 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,966 INFO L168 Benchmark]: TraceAbstraction took 5572.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.6 MB in the end (delta: 255.9 MB). Peak memory consumption was 255.9 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,966 INFO L168 Benchmark]: Witness Printer took 45.04 ms. Allocated memory is still 1.2 GB. Free memory was 859.6 MB in the beginning and 852.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:32,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.55 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 927.3 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 15.83 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -212.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 275.90 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5572.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.6 MB in the end (delta: 255.9 MB). Peak memory consumption was 255.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.04 ms. Allocated memory is still 1.2 GB. Free memory was 859.6 MB in the beginning and 852.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 20]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 157 SDtfs, 134 SDslu, 557 SDs, 0 SdLazy, 266 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 16 PreInvPairs, 19 NumberOfFragments, 58 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 44 QuantifiedInterpolants, 27395 SizeOfPredicates, 21 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...