./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70ee165c745ab937eeca69bc762f66bcb3efe6fa .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 02:26:25,402 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 02:26:25,403 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 02:26:25,409 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 02:26:25,409 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 02:26:25,409 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 02:26:25,410 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 02:26:25,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 02:26:25,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 02:26:25,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 02:26:25,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 02:26:25,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 02:26:25,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 02:26:25,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 02:26:25,414 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 02:26:25,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 02:26:25,415 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 02:26:25,416 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 02:26:25,417 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 02:26:25,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 02:26:25,418 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 02:26:25,419 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 02:26:25,420 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 02:26:25,420 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 02:26:25,421 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 02:26:25,421 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 02:26:25,422 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 02:26:25,422 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 02:26:25,422 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 02:26:25,423 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 02:26:25,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 02:26:25,424 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 02:26:25,424 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 02:26:25,424 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 02:26:25,424 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 02:26:25,425 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 02:26:25,425 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 02:26:25,432 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 02:26:25,433 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 02:26:25,433 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 02:26:25,433 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 02:26:25,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 02:26:25,433 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 02:26:25,433 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 02:26:25,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 02:26:25,434 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 02:26:25,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 02:26:25,435 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:26:25,436 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 02:26:25,436 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-12-02 02:26:25,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 02:26:25,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 02:26:25,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 02:26:25,463 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 02:26:25,463 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 02:26:25,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:25,498 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/918ece700/599c7b87083742aea2424a756babf246/FLAG48ea39877 [2018-12-02 02:26:25,828 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 02:26:25,828 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:25,832 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/918ece700/599c7b87083742aea2424a756babf246/FLAG48ea39877 [2018-12-02 02:26:26,231 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/918ece700/599c7b87083742aea2424a756babf246 [2018-12-02 02:26:26,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 02:26:26,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 02:26:26,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 02:26:26,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 02:26:26,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 02:26:26,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8209d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26, skipping insertion in model container [2018-12-02 02:26:26,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 02:26:26,260 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 02:26:26,347 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:26:26,349 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 02:26:26,361 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:26:26,373 INFO L195 MainTranslator]: Completed translation [2018-12-02 02:26:26,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26 WrapperNode [2018-12-02 02:26:26,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 02:26:26,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 02:26:26,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 02:26:26,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 02:26:26,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 02:26:26,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 02:26:26,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 02:26:26,388 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 02:26:26,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... [2018-12-02 02:26:26,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 02:26:26,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 02:26:26,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 02:26:26,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 02:26:26,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:26:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 02:26:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 02:26:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 02:26:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 02:26:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-02 02:26:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-02 02:26:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 02:26:26,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 02:26:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 02:26:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 02:26:26,572 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 02:26:26,572 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 02:26:26,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:26 BoogieIcfgContainer [2018-12-02 02:26:26,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 02:26:26,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 02:26:26,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 02:26:26,575 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 02:26:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:26:26" (1/3) ... [2018-12-02 02:26:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c76f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:26:26, skipping insertion in model container [2018-12-02 02:26:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:26" (2/3) ... [2018-12-02 02:26:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c76f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:26:26, skipping insertion in model container [2018-12-02 02:26:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:26" (3/3) ... [2018-12-02 02:26:26,578 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:26,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 02:26:26,588 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 02:26:26,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 02:26:26,617 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 02:26:26,617 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 02:26:26,617 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 02:26:26,617 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 02:26:26,617 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 02:26:26,617 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 02:26:26,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 02:26:26,618 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 02:26:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-02 02:26:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 02:26:26,631 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:26:26,632 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:26:26,633 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:26:26,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:26:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1334747875, now seen corresponding path program 1 times [2018-12-02 02:26:26,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 02:26:26,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:26:26,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:26:26,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:26:26,667 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 02:26:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:26:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:26:26,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:26:26,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 02:26:26,712 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 02:26:26,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 02:26:26,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 02:26:26,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:26:26,724 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-12-02 02:26:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:26:26,735 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-02 02:26:26,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 02:26:26,736 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 02:26:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:26:26,741 INFO L225 Difference]: With dead ends: 48 [2018-12-02 02:26:26,741 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 02:26:26,743 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 [2018-12-02 02:26:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 02:26:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 02:26:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 02:26:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-12-02 02:26:26,764 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2018-12-02 02:26:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:26:26,765 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-12-02 02:26:26,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 02:26:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-12-02 02:26:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 02:26:26,765 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:26:26,765 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:26:26,766 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:26:26,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:26:26,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1526057926, now seen corresponding path program 1 times [2018-12-02 02:26:26,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 02:26:26,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:26:26,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:26:26,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:26:26,767 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 02:26:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 02:26:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 02:26:26,812 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 02:26:26,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:26:26 BoogieIcfgContainer [2018-12-02 02:26:26,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 02:26:26,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 02:26:26,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 02:26:26,829 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 02:26:26,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:26" (3/4) ... [2018-12-02 02:26:26,831 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 02:26:26,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 02:26:26,832 INFO L168 Benchmark]: Toolchain (without parser) took 597.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -103.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:26,833 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:26:26,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.05 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:26,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.32 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:26:26,834 INFO L168 Benchmark]: Boogie Preprocessor took 44.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:26,834 INFO L168 Benchmark]: RCFGBuilder took 140.11 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:26,835 INFO L168 Benchmark]: TraceAbstraction took 255.44 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:26,835 INFO L168 Benchmark]: Witness Printer took 2.80 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. [2018-12-02 02:26:26,837 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 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.05 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.32 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 140.11 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 255.44 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 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: 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 0.1.23-635dfa2 [2018-12-02 02:26:28,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 02:26:28,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 02:26:28,139 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 02:26:28,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 02:26:28,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 02:26:28,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 02:26:28,141 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 02:26:28,142 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 02:26:28,142 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 02:26:28,143 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 02:26:28,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 02:26:28,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 02:26:28,144 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 02:26:28,144 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 02:26:28,145 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 02:26:28,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 02:26:28,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 02:26:28,147 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 02:26:28,148 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 02:26:28,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 02:26:28,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 02:26:28,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 02:26:28,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 02:26:28,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 02:26:28,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 02:26:28,151 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 02:26:28,151 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 02:26:28,152 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 02:26:28,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 02:26:28,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 02:26:28,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 02:26:28,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 02:26:28,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 02:26:28,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 02:26:28,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 02:26:28,154 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 02:26:28,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 02:26:28,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 02:26:28,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 02:26:28,162 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 02:26:28,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 02:26:28,163 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 02:26:28,163 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 02:26:28,164 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 02:26:28,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:26:28,165 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 02:26:28,165 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 02:26:28,165 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_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ee165c745ab937eeca69bc762f66bcb3efe6fa [2018-12-02 02:26:28,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 02:26:28,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 02:26:28,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 02:26:28,197 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 02:26:28,198 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 02:26:28,198 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:28,239 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/dea7559c8/61bc0b950a094776b67a6d4396075ed1/FLAG1e7c6e801 [2018-12-02 02:26:28,638 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 02:26:28,638 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/sv-benchmarks/c/float-newlib/float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:28,642 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/dea7559c8/61bc0b950a094776b67a6d4396075ed1/FLAG1e7c6e801 [2018-12-02 02:26:28,650 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/data/dea7559c8/61bc0b950a094776b67a6d4396075ed1 [2018-12-02 02:26:28,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 02:26:28,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 02:26:28,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 02:26:28,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 02:26:28,655 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 02:26:28,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25287d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28, skipping insertion in model container [2018-12-02 02:26:28,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 02:26:28,671 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 02:26:28,761 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:26:28,764 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 02:26:28,777 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:26:28,790 INFO L195 MainTranslator]: Completed translation [2018-12-02 02:26:28,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28 WrapperNode [2018-12-02 02:26:28,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 02:26:28,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 02:26:28,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 02:26:28,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 02:26:28,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 02:26:28,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 02:26:28,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 02:26:28,807 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 02:26:28,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... [2018-12-02 02:26:28,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 02:26:28,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 02:26:28,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 02:26:28,825 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 02:26:28,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:26:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 02:26:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 02:26:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-02 02:26:28,890 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 02:26:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 02:26:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-12-02 02:26:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 02:26:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 02:26:28,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 02:26:28,993 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 02:26:29,009 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 02:26:29,009 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 02:26:29,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:29 BoogieIcfgContainer [2018-12-02 02:26:29,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 02:26:29,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 02:26:29,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 02:26:29,012 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 02:26:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:26:28" (1/3) ... [2018-12-02 02:26:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ff7110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:26:29, skipping insertion in model container [2018-12-02 02:26:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:26:28" (2/3) ... [2018-12-02 02:26:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ff7110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:26:29, skipping insertion in model container [2018-12-02 02:26:29,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:29" (3/3) ... [2018-12-02 02:26:29,014 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010_true-unreach-call.c [2018-12-02 02:26:29,019 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 02:26:29,023 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 02:26:29,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 02:26:29,048 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 02:26:29,049 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 02:26:29,049 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 02:26:29,049 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 02:26:29,049 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 02:26:29,049 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 02:26:29,049 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 02:26:29,049 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 02:26:29,049 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 02:26:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-02 02:26:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 02:26:29,061 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:26:29,061 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] [2018-12-02 02:26:29,063 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:26:29,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:26:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1379682009, now seen corresponding path program 1 times [2018-12-02 02:26:29,068 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:26:29,068 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 02:26:29,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:26:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:26:29,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:26:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:26:29,126 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:26:29,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:26:29,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 02:26:29,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 02:26:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 02:26:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:26:29,144 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-12-02 02:26:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:26:29,155 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-02 02:26:29,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 02:26:29,156 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-12-02 02:26:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:26:29,161 INFO L225 Difference]: With dead ends: 46 [2018-12-02 02:26:29,161 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 02:26:29,163 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 [2018-12-02 02:26:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 02:26:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-02 02:26:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 02:26:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-12-02 02:26:29,184 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 20 [2018-12-02 02:26:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:26:29,185 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-12-02 02:26:29,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 02:26:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-12-02 02:26:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 02:26:29,185 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:26:29,185 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:26:29,186 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:26:29,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:26:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash -241571996, now seen corresponding path program 1 times [2018-12-02 02:26:29,186 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:26:29,186 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 02:26:29,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:26:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:26:29,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:26:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:26:29,431 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:26:29,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:26:29,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-12-02 02:26:29,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 02:26:29,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 02:26:29,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-12-02 02:26:29,444 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 11 states. [2018-12-02 02:26:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:26:29,876 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-12-02 02:26:29,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 02:26:29,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-12-02 02:26:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:26:29,877 INFO L225 Difference]: With dead ends: 23 [2018-12-02 02:26:29,877 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 02:26:29,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-12-02 02:26:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 02:26:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 02:26:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 02:26:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 02:26:29,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-12-02 02:26:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:26:29,879 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 02:26:29,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 02:26:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 02:26:29,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 02:26:29,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 02:26:29,925 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 12) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 12) the Hoare annotation is: true [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 12) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point fabs_floatFINAL(lines 14 27) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point fabs_floatEXIT(lines 14 27) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L451 ceAbstractionStarter]: At program point fabs_floatENTRY(lines 14 27) the Hoare annotation is: true [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2018-12-02 02:26:29,926 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (= fabs_float_~x |fabs_float_#in~x|) [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 02:26:29,927 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 29 45) the Hoare annotation is: true [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 29 45) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 29 45) no Hoare annotation was computed. [2018-12-02 02:26:29,927 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-12-02 02:26:29,927 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)))) [2018-12-02 02:26:29,928 INFO L448 ceAbstractionStarter]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2018-12-02 02:26:29,928 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))) [2018-12-02 02:26:29,928 INFO L448 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2018-12-02 02:26:29,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:26:29 BoogieIcfgContainer [2018-12-02 02:26:29,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 02:26:29,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 02:26:29,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 02:26:29,935 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 02:26:29,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:26:29" (3/4) ... [2018-12-02 02:26:29,938 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 02:26:29,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-02 02:26:29,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 02:26:29,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-12-02 02:26:29,942 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 02:26:29,945 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-02 02:26:29,945 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-02 02:26:29,945 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 02:26:29,961 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-02 02:26:29,969 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d1fa2a15-6a1a-4902-81fb-4b11293afc2f/bin-2019/utaipan/witness.graphml [2018-12-02 02:26:29,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 02:26:29,970 INFO L168 Benchmark]: Toolchain (without parser) took 1318.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -63.9 MB). Peak memory consumption was 74.0 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:29,971 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-02 02:26:29,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.14 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:29,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.37 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:29,972 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:26:29,972 INFO L168 Benchmark]: RCFGBuilder took 184.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:29,972 INFO L168 Benchmark]: TraceAbstraction took 925.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:26:29,973 INFO L168 Benchmark]: Witness Printer took 34.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:26:29,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.14 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 15.37 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 184.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 925.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 11.5 GB. * Witness Printer took 34.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 0.8s 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, 0.3s 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...