./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 70ee165c745ab937eeca69bc762f66bcb3efe6fa .............................................................................................................................................................................................................................................................................................................. 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_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 70ee165c745ab937eeca69bc762f66bcb3efe6fa ....................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:56:52,377 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:56:52,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:56:52,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:56:52,385 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:56:52,386 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:56:52,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:56:52,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:56:52,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:56:52,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:56:52,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:56:52,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:56:52,391 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:56:52,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:56:52,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:56:52,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:56:52,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:56:52,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:56:52,396 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:56:52,397 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:56:52,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:56:52,399 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:56:52,401 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:56:52,401 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:56:52,401 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:56:52,402 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:56:52,402 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:56:52,403 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:56:52,403 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:56:52,404 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:56:52,404 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:56:52,405 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:56:52,405 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:56:52,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:56:52,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:56:52,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:56:52,406 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:56:52,417 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:56:52,417 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:56:52,417 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:56:52,417 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:56:52,418 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:56:52,418 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:56:52,418 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:56:52,418 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:56:52,418 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:56:52,419 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:56:52,420 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:56:52,420 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:56:52,421 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:56:52,421 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:56:52,421 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:56:52,421 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:56:52,421 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:56:52,421 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:56:52,421 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_e7296232-f399-4daa-8085-489f0812a258/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 -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-11-28 11:56:52,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:56:52,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:56:52,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:56:52,454 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:56:52,454 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:56:52,455 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:52,490 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/2250662d6/661124c7d3964b16ae9f5f115eb693c3/FLAGbb6ed091e [2018-11-28 11:56:52,886 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:56:52,887 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:52,891 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/2250662d6/661124c7d3964b16ae9f5f115eb693c3/FLAGbb6ed091e [2018-11-28 11:56:52,901 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/2250662d6/661124c7d3964b16ae9f5f115eb693c3 [2018-11-28 11:56:52,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:56:52,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:56:52,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:56:52,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:56:52,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:56:52,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:52" (1/1) ... [2018-11-28 11:56:52,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6160bb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:52, skipping insertion in model container [2018-11-28 11:56:52,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:52" (1/1) ... [2018-11-28 11:56:52,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:56:52,923 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:56:53,027 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:56:53,030 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:56:53,042 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:56:53,055 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:56:53,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53 WrapperNode [2018-11-28 11:56:53,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:56:53,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:56:53,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:56:53,056 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:56:53,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:56:53,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:56:53,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:56:53,072 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:56:53,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2018-11-28 11:56:53,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:56:53,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:56:53,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:56:53,126 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:56:53,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 [2018-11-28 11:56:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:56:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 11:56:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:56:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-28 11:56:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:56:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:56:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:56:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:56:53,277 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:56:53,277 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 11:56:53,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:53 BoogieIcfgContainer [2018-11-28 11:56:53,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:56:53,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:56:53,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:56:53,280 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:56:53,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:56:52" (1/3) ... [2018-11-28 11:56:53,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214bd2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:53, skipping insertion in model container [2018-11-28 11:56:53,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (2/3) ... [2018-11-28 11:56:53,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214bd2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:53, skipping insertion in model container [2018-11-28 11:56:53,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:53" (3/3) ... [2018-11-28 11:56:53,283 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:53,289 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:56:53,293 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:56:53,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:56:53,322 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:56:53,323 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:56:53,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:56:53,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:56:53,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:56:53,323 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:56:53,323 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:56:53,323 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:56:53,323 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:56:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 11:56:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 11:56:53,338 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:56:53,338 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:56:53,340 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:56:53,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:56:53,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1334747875, now seen corresponding path program 1 times [2018-11-28 11:56:53,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:56:53,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:56:53,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:56:53,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:56:53,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:56:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:56:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:56:53,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:56:53,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:56:53,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 11:56:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 11:56:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:56:53,446 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-11-28 11:56:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:56:53,459 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-28 11:56:53,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:56:53,460 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 11:56:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:56:53,469 INFO L225 Difference]: With dead ends: 48 [2018-11-28 11:56:53,469 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 11:56:53,472 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 [2018-11-28 11:56:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 11:56:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 11:56:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 11:56:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-11-28 11:56:53,496 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2018-11-28 11:56:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:56:53,497 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-11-28 11:56:53,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 11:56:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-11-28 11:56:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:56:53,498 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:56:53,498 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:56:53,498 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:56:53,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:56:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1526057926, now seen corresponding path program 1 times [2018-11-28 11:56:53,498 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:56:53,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:56:53,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:56:53,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:56:53,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:56:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:56:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:56:53,563 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:56:53,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:56:53 BoogieIcfgContainer [2018-11-28 11:56:53,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:56:53,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:56:53,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:56:53,585 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:56:53,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:53" (3/4) ... [2018-11-28 11:56:53,588 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:56:53,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:56:53,589 INFO L168 Benchmark]: Toolchain (without parser) took 685.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:53,590 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:56:53,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.97 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:53,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:56:53,591 INFO L168 Benchmark]: Boogie Preprocessor took 53.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 945.3 MB in the beginning and 1.2 GB in the end (delta: -224.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:53,592 INFO L168 Benchmark]: RCFGBuilder took 150.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:53,592 INFO L168 Benchmark]: TraceAbstraction took 306.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:53,593 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:56:53,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.97 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.28 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 945.3 MB in the beginning and 1.2 GB in the end (delta: -224.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 150.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 306.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L35] float x = 0.0f / 0.0f; [L36] CALL, EXPR fabs_float(x) VAL [\old(x)=14] [L15] __uint32_t ix; VAL [\old(x)=14, x=14] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; VAL [\old(x)=14, \result=5, ix=12, x=5] [L36] RET, EXPR fabs_float(x) VAL [fabs_float(x)=5, x=14] [L36] float res = fabs_float(x); [L39] CALL, EXPR isnan_float(res) VAL [\old(x)=5] [L12] return x != x; VAL [\old(x)=5, \result=0, x=5] [L39] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=5, x=14] [L39] COND TRUE !isnan_float(res) [L40] __VERIFIER_error() VAL [res=5, x=14] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 0.1.23-0cd3be1 [2018-11-28 11:56:55,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:56:55,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:56:55,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:56:55,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:56:55,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:56:55,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:56:55,041 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:56:55,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:56:55,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:56:55,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:56:55,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:56:55,044 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:56:55,045 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:56:55,046 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:56:55,046 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:56:55,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:56:55,048 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:56:55,050 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:56:55,051 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:56:55,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:56:55,052 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:56:55,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:56:55,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:56:55,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:56:55,055 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:56:55,056 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:56:55,056 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:56:55,057 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:56:55,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:56:55,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:56:55,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:56:55,058 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:56:55,058 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:56:55,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:56:55,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:56:55,060 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 11:56:55,070 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:56:55,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:56:55,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:56:55,071 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:56:55,071 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:56:55,071 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:56:55,071 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:56:55,072 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:56:55,072 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:56:55,073 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:56:55,073 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:56:55,074 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:56:55,074 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:56:55,075 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 11:56:55,075 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:56:55,075 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 11:56:55,075 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 11:56:55,075 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_e7296232-f399-4daa-8085-489f0812a258/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 -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-11-28 11:56:55,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:56:55,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:56:55,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:56:55,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:56:55,110 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:56:55,110 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:55,146 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/d285d4d58/9ffa5694639845edaf598f71902d3914/FLAGaa1ce2d78 [2018-11-28 11:56:55,444 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:56:55,444 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:55,448 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/d285d4d58/9ffa5694639845edaf598f71902d3914/FLAGaa1ce2d78 [2018-11-28 11:56:55,458 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/data/d285d4d58/9ffa5694639845edaf598f71902d3914 [2018-11-28 11:56:55,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:56:55,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:56:55,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:56:55,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:56:55,464 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:56:55,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7783a789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55, skipping insertion in model container [2018-11-28 11:56:55,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:56:55,482 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:56:55,586 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:56:55,591 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:56:55,604 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:56:55,625 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:56:55,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55 WrapperNode [2018-11-28 11:56:55,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:56:55,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:56:55,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:56:55,626 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:56:55,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:56:55,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:56:55,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:56:55,643 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:56:55,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... [2018-11-28 11:56:55,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:56:55,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:56:55,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:56:55,662 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:56:55,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 [2018-11-28 11:56:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:56:55,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:56:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 11:56:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 11:56:55,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 11:56:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:56:55,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-11-28 11:56:55,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:56:55,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 11:56:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:56:55,853 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:56:55,887 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:56:55,887 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 11:56:55,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:55 BoogieIcfgContainer [2018-11-28 11:56:55,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:56:55,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:56:55,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:56:55,890 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:56:55,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:56:55" (1/3) ... [2018-11-28 11:56:55,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447066d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:55, skipping insertion in model container [2018-11-28 11:56:55,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:55" (2/3) ... [2018-11-28 11:56:55,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447066d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:55, skipping insertion in model container [2018-11-28 11:56:55,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:55" (3/3) ... [2018-11-28 11:56:55,893 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-11-28 11:56:55,901 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:56:55,906 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:56:55,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:56:55,942 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:56:55,942 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:56:55,942 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:56:55,942 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:56:55,942 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:56:55,943 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:56:55,943 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:56:55,943 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:56:55,943 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:56:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-28 11:56:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 11:56:55,960 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:56:55,961 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] [2018-11-28 11:56:55,963 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:56:55,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:56:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1379682009, now seen corresponding path program 1 times [2018-11-28 11:56:55,971 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:56:55,971 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 [2018-11-28 11:56:55,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:56:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:56:56,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:56:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:56:56,026 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:56:56,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:56:56,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:56:56,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 11:56:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 11:56:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:56:56,045 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-11-28 11:56:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:56:56,056 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-28 11:56:56,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:56:56,057 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-28 11:56:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:56:56,064 INFO L225 Difference]: With dead ends: 46 [2018-11-28 11:56:56,064 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 11:56:56,067 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:56:56,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 11:56:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 11:56:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 11:56:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-11-28 11:56:56,093 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 20 [2018-11-28 11:56:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:56:56,093 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-11-28 11:56:56,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 11:56:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-11-28 11:56:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 11:56:56,094 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:56:56,094 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:56:56,095 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:56:56,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:56:56,095 INFO L82 PathProgramCache]: Analyzing trace with hash -241571996, now seen corresponding path program 1 times [2018-11-28 11:56:56,095 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 11:56:56,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/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 [2018-11-28 11:56:56,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:56:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:56:56,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:56:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:56:56,407 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:56:56,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:56:56,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-28 11:56:56,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:56:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:56:56,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:56:56,420 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 11 states. [2018-11-28 11:56:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:56:56,875 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-11-28 11:56:56,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:56:56,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-28 11:56:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:56:56,876 INFO L225 Difference]: With dead ends: 23 [2018-11-28 11:56:56,876 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:56:56,876 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-11-28 11:56:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:56:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:56:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:56:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:56:56,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-28 11:56:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:56:56,877 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:56:56,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:56:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:56:56,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:56:56,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 11:56:56,928 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 12) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 12) the Hoare annotation is: true [2018-11-28 11:56:56,929 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 12) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:56:56,929 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-28 11:56:56,929 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 14 27) the Hoare annotation is: true [2018-11-28 11:56:56,930 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-11-28 11:56:56,930 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2018-11-28 11:56:56,930 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2018-11-28 11:56:56,930 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-28 11:56:56,930 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-11-28 11:56:56,930 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:56:56,930 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 11:56:56,930 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 29 45) the Hoare annotation is: true [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 29 45) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 29 45) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L444 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (exists ((fabs_float_~ix~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) fabs_float_~ix~0) ((_ extract 30 23) fabs_float_~ix~0) ((_ extract 22 0) fabs_float_~ix~0)) (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) (= main_~res~0 (let ((.cse0 (bvand (_ bv2147483647 32) fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2018-11-28 11:56:56,931 INFO L444 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-11-28 11:56:56,931 INFO L448 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2018-11-28 11:56:56,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:56:56 BoogieIcfgContainer [2018-11-28 11:56:56,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:56:56,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:56:56,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:56:56,940 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:56:56,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:55" (3/4) ... [2018-11-28 11:56:56,943 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:56:56,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-28 11:56:56,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:56:56,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-11-28 11:56:56,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:56:56,950 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 11:56:56,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 11:56:56,951 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:56:56,970 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-28 11:56:56,981 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e7296232-f399-4daa-8085-489f0812a258/bin-2019/uautomizer/witness.graphml [2018-11-28 11:56:56,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:56:56,982 INFO L168 Benchmark]: Toolchain (without parser) took 1521.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 65.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:56,983 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. [2018-11-28 11:56:56,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.93 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:56,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:56,984 INFO L168 Benchmark]: Boogie Preprocessor took 19.27 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. [2018-11-28 11:56:56,984 INFO L168 Benchmark]: RCFGBuilder took 225.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 927.3 MB in the beginning and 1.2 GB in the end (delta: -223.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:56,985 INFO L168 Benchmark]: TraceAbstraction took 1051.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:56:56,985 INFO L168 Benchmark]: Witness Printer took 41.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:56:56,988 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 163.93 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.50 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.27 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 225.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 927.3 MB in the beginning and 1.2 GB in the end (delta: -223.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1051.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.51 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: 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: 16]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 7 SDslu, 107 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 51 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 6 QuantifiedInterpolants, 5317 SizeOfPredicates, 6 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...