./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ........................................................................................................................................................................................................................................................................................................................ 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_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ........................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:06:05,971 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:06:05,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:06:05,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:06:05,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:06:05,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:06:05,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:06:05,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:06:05,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:06:05,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:06:05,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:06:05,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:06:05,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:06:05,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:06:05,988 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:06:05,989 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:06:05,989 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:06:05,990 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:06:05,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:06:05,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:06:05,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:06:05,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:06:05,996 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:06:05,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:06:05,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:06:05,997 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:06:05,998 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:06:05,998 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:06:05,999 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:06:06,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:06:06,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:06:06,001 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:06:06,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:06:06,001 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:06:06,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:06:06,002 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:06:06,002 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:06:06,011 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:06:06,012 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:06:06,012 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:06:06,012 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:06:06,013 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:06:06,013 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:06:06,013 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:06:06,013 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:06:06,013 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:06:06,013 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:06:06,014 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:06:06,014 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:06:06,014 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:06:06,014 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:06:06,015 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:06:06,016 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:06:06,016 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:06:06,016 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:06:06,016 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:06:06,016 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:06:06,016 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:06:06,017 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:06:06,017 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:06:06,018 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:06:06,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:06:06,018 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:06:06,018 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_548fad96-448e-410f-a404-a7e46e7dc459/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-11-18 12:06:06,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:06:06,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:06:06,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:06:06,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:06:06,059 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:06:06,060 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:06,111 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/32d635177/484e84409fa74456b78bd7f310bc8392/FLAG295a6a826 [2018-11-18 12:06:06,515 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:06:06,515 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:06,519 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/32d635177/484e84409fa74456b78bd7f310bc8392/FLAG295a6a826 [2018-11-18 12:06:06,529 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/32d635177/484e84409fa74456b78bd7f310bc8392 [2018-11-18 12:06:06,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:06:06,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:06:06,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:06:06,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:06:06,534 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:06:06,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ae4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06, skipping insertion in model container [2018-11-18 12:06:06,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:06:06,562 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:06:06,689 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:06:06,692 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:06:06,706 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:06:06,719 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:06:06,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06 WrapperNode [2018-11-18 12:06:06,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:06:06,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:06:06,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:06:06,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:06:06,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:06:06,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:06:06,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:06:06,736 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:06:06,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... [2018-11-18 12:06:06,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:06:06,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:06:06,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:06:06,793 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:06:06,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 [2018-11-18 12:06:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:06:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:06:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:06:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:06:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 12:06:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:06:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:06:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 12:06:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:06:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:06:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:06:06,997 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:06:06,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:06 BoogieIcfgContainer [2018-11-18 12:06:06,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:06:06,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:06:06,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:06:07,000 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:06:07,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:06:06" (1/3) ... [2018-11-18 12:06:07,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e21291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:06:07, skipping insertion in model container [2018-11-18 12:06:07,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:06" (2/3) ... [2018-11-18 12:06:07,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e21291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:06:07, skipping insertion in model container [2018-11-18 12:06:07,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:06" (3/3) ... [2018-11-18 12:06:07,002 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:07,010 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:06:07,016 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:06:07,029 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:06:07,053 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:06:07,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:06:07,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:06:07,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:06:07,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:06:07,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:06:07,053 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:06:07,053 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:06:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-18 12:06:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:06:07,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:07,067 INFO L375 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] [2018-11-18 12:06:07,069 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:07,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash -357144857, now seen corresponding path program 1 times [2018-11-18 12:06:07,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:06:07,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:06:07,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:07,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:06:07,104 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:06:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:06:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:06:07,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:06:07,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:06:07,150 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:06:07,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:06:07,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:06:07,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:06:07,163 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-18 12:06:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:06:07,175 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2018-11-18 12:06:07,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:06:07,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 12:06:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:06:07,183 INFO L225 Difference]: With dead ends: 60 [2018-11-18 12:06:07,183 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 12:06:07,186 INFO L604 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 [2018-11-18 12:06:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 12:06:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 12:06:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 12:06:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 12:06:07,212 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2018-11-18 12:06:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:06:07,212 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 12:06:07,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:06:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 12:06:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:06:07,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:07,214 INFO L375 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] [2018-11-18 12:06:07,214 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:07,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:07,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1706809823, now seen corresponding path program 1 times [2018-11-18 12:06:07,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:06:07,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:06:07,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:07,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:06:07,216 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:06:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:06:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:06:07,285 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:06:07,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:06:07 BoogieIcfgContainer [2018-11-18 12:06:07,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:06:07,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:06:07,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:06:07,304 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:06:07,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:06" (3/4) ... [2018-11-18 12:06:07,307 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:06:07,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:06:07,308 INFO L168 Benchmark]: Toolchain (without parser) took 776.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -117.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:07,309 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:07,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:07,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.56 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:07,310 INFO L168 Benchmark]: Boogie Preprocessor took 56.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:07,310 INFO L168 Benchmark]: RCFGBuilder took 204.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:07,310 INFO L168 Benchmark]: TraceAbstraction took 306.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:07,311 INFO L168 Benchmark]: Witness Printer took 3.05 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. [2018-11-18 12:06:07,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.56 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 204.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 306.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.05 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 55, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L65] float x = 0.0f / 0.0f; [L66] CALL, EXPR round_float(x) VAL [\old(x)=10] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=10, x=10] [L17] FCALL ieee_float_shape_type gf_u; [L18] FCALL gf_u.value = (x) [L19] EXPR, FCALL gf_u.word [L19] (w) = gf_u.word [L20] COND FALSE !(0) VAL [\old(x)=10, w=8, x=10] [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L40] COND TRUE exponent_less_127 == 128 [L42] RET return x + x; VAL [\old(x)=10, exponent_less_127=128, w=8, x=10] [L66] EXPR round_float(x) VAL [round_float(x)=9, x=10] [L66] float res = round_float(x); [L69] CALL, EXPR isnan_float(res) VAL [\old(x)=9] [L55] RET return x != x; VAL [\old(x)=9, \result=0, x=9] [L69] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=9, x=10] [L69] COND TRUE !isnan_float(res) [L70] __VERIFIER_error() VAL [res=9, x=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 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=34occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 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 0.1.23-5842f4b [2018-11-18 12:06:08,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:06:08,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:06:08,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:06:08,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:06:08,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:06:08,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:06:08,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:06:08,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:06:08,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:06:08,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:06:08,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:06:08,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:06:08,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:06:08,755 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:06:08,756 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:06:08,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:06:08,758 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:06:08,759 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:06:08,760 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:06:08,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:06:08,761 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:06:08,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:06:08,763 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:06:08,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:06:08,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:06:08,765 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:06:08,765 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:06:08,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:06:08,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:06:08,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:06:08,767 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:06:08,767 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:06:08,767 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:06:08,768 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:06:08,769 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:06:08,769 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:06:08,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:06:08,779 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:06:08,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:06:08,780 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:06:08,780 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:06:08,780 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:06:08,781 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:06:08,781 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:06:08,781 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:06:08,781 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:06:08,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:06:08,782 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:06:08,783 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:06:08,783 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:06:08,784 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:06:08,784 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:06:08,785 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:06:08,785 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:06:08,785 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:06:08,785 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:06:08,785 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_548fad96-448e-410f-a404-a7e46e7dc459/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-11-18 12:06:08,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:06:08,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:06:08,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:06:08,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:06:08,830 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:06:08,831 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:08,873 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/50da04f3f/76749bb620614e6cba798e7c285cfc86/FLAG830526aff [2018-11-18 12:06:09,198 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:06:09,199 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:09,203 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/50da04f3f/76749bb620614e6cba798e7c285cfc86/FLAG830526aff [2018-11-18 12:06:09,630 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/data/50da04f3f/76749bb620614e6cba798e7c285cfc86 [2018-11-18 12:06:09,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:06:09,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:06:09,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:06:09,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:06:09,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:06:09,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d90de4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09, skipping insertion in model container [2018-11-18 12:06:09,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:06:09,656 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:06:09,786 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:06:09,790 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:06:09,805 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:06:09,820 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:06:09,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09 WrapperNode [2018-11-18 12:06:09,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:06:09,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:06:09,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:06:09,821 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:06:09,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:06:09,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:06:09,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:06:09,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:06:09,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... [2018-11-18 12:06:09,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:06:09,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:06:09,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:06:09,862 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:06:09,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 [2018-11-18 12:06:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:06:09,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:06:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 12:06:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 12:06:09,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:06:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-11-18 12:06:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:06:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:06:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:06:10,133 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:06:10,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:10 BoogieIcfgContainer [2018-11-18 12:06:10,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:06:10,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:06:10,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:06:10,135 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:06:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:06:09" (1/3) ... [2018-11-18 12:06:10,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f5ce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:06:10, skipping insertion in model container [2018-11-18 12:06:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:06:09" (2/3) ... [2018-11-18 12:06:10,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f5ce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:06:10, skipping insertion in model container [2018-11-18 12:06:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:10" (3/3) ... [2018-11-18 12:06:10,137 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-11-18 12:06:10,142 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:06:10,147 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:06:10,157 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:06:10,175 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:06:10,176 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:06:10,176 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:06:10,176 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:06:10,176 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:06:10,176 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:06:10,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:06:10,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:06:10,177 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:06:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-18 12:06:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:06:10,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:10,190 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:06:10,191 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:10,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1641343941, now seen corresponding path program 1 times [2018-11-18 12:06:10,198 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:06:10,199 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 [2018-11-18 12:06:10,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:06:10,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:06:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:06:10,260 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:06:10,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:06:10,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:06:10,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:06:10,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:06:10,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:06:10,284 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-11-18 12:06:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:06:10,297 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2018-11-18 12:06:10,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:06:10,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 12:06:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:06:10,305 INFO L225 Difference]: With dead ends: 58 [2018-11-18 12:06:10,305 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 12:06:10,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:06:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 12:06:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 12:06:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 12:06:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-18 12:06:10,332 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2018-11-18 12:06:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:06:10,332 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-18 12:06:10,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:06:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-18 12:06:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:06:10,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:10,333 INFO L375 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] [2018-11-18 12:06:10,333 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:10,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:10,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1426826695, now seen corresponding path program 1 times [2018-11-18 12:06:10,333 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:06:10,333 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/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 [2018-11-18 12:06:10,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:06:10,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:06:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:06:10,861 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:06:10,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:06:10,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:06:10,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:06:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:06:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:06:10,872 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2018-11-18 12:06:11,180 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 12:06:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:06:11,598 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-18 12:06:11,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:06:11,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 12:06:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:06:11,601 INFO L225 Difference]: With dead ends: 38 [2018-11-18 12:06:11,601 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 12:06:11,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:06:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 12:06:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-18 12:06:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 12:06:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 12:06:11,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2018-11-18 12:06:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:06:11,612 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 12:06:11,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:06:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-11-18 12:06:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:06:11,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:11,613 INFO L375 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] [2018-11-18 12:06:11,613 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:11,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1230313190, now seen corresponding path program 1 times [2018-11-18 12:06:11,615 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:06:11,615 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 12:06:11,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:06:11,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:06:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:06:11,731 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:06:11,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:06:11,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:06:11,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:06:11,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:06:11,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:06:11,739 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2018-11-18 12:06:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:06:11,947 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-11-18 12:06:11,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:06:11,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 12:06:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:06:11,948 INFO L225 Difference]: With dead ends: 36 [2018-11-18 12:06:11,948 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 12:06:11,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:06:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 12:06:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 12:06:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 12:06:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-18 12:06:11,951 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2018-11-18 12:06:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:06:11,951 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-18 12:06:11,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:06:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-18 12:06:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:06:11,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:06:11,952 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:06:11,952 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:06:11,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:06:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1629077807, now seen corresponding path program 1 times [2018-11-18 12:06:11,953 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:06:11,953 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 12:06:11,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:06:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:06:11,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:06:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:06:12,091 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:06:12,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:06:12,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:06:12,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:06:12,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:06:12,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:06:12,103 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2018-11-18 12:06:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:06:12,323 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-18 12:06:12,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:06:12,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-18 12:06:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:06:12,324 INFO L225 Difference]: With dead ends: 28 [2018-11-18 12:06:12,324 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:06:12,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:06:12,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:06:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:06:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:06:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:06:12,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-18 12:06:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:06:12,325 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:06:12,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:06:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:06:12,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:06:12,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:06:12,395 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-11-18 12:06:12,395 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-11-18 12:06:12,395 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-11-18 12:06:12,395 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L428 ceAbstractionStarter]: At program point round_floatENTRY(lines 11 52) the Hoare annotation is: true [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 38) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L46-2(lines 11 52) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point round_floatFINAL(lines 11 52) no Hoare annotation was computed. [2018-11-18 12:06:12,396 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point round_floatEXIT(lines 11 52) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 45) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point L16-4(lines 16 20) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:06:12,397 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:06:12,397 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:06:12,397 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 57 75) the Hoare annotation is: true [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 57 75) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 57 75) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-18 12:06:12,398 INFO L421 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)) (= main_~x~0 .cse0))) [2018-11-18 12:06:12,398 INFO L425 ceAbstractionStarter]: For program point L69-1(lines 69 72) no Hoare annotation was computed. [2018-11-18 12:06:12,399 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-11-18 12:06:12,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:06:12 BoogieIcfgContainer [2018-11-18 12:06:12,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:06:12,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:06:12,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:06:12,407 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:06:12,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:06:10" (3/4) ... [2018-11-18 12:06:12,410 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:06:12,414 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 12:06:12,414 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:06:12,414 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-11-18 12:06:12,415 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:06:12,418 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-18 12:06:12,418 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 12:06:12,418 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:06:12,436 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 12:06:12,452 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_548fad96-448e-410f-a404-a7e46e7dc459/bin-2019/utaipan/witness.graphml [2018-11-18 12:06:12,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:06:12,453 INFO L168 Benchmark]: Toolchain (without parser) took 2820.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 953.2 MB in the beginning and 949.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 126.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:12,454 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:12,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.27 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:12,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.87 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:12,455 INFO L168 Benchmark]: Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:12,455 INFO L168 Benchmark]: RCFGBuilder took 271.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:12,456 INFO L168 Benchmark]: TraceAbstraction took 2273.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.6 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:06:12,456 INFO L168 Benchmark]: Witness Printer took 45.51 ms. Allocated memory is still 1.2 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:06:12,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.27 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.87 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 271.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2273.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.6 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.51 ms. Allocated memory is still 1.2 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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, 33 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 46 SDslu, 362 SDs, 0 SdLazy, 146 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 34 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 87 ConstructedInterpolants, 8 QuantifiedInterpolants, 9390 SizeOfPredicates, 12 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...