./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 cbf38875841624eee0d839935b3b6d34a59b0b20 ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 cbf38875841624eee0d839935b3b6d34a59b0b20 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:21:53,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:21:53,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:21:53,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:21:53,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:21:53,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:21:53,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:21:53,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:21:53,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:21:53,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:21:53,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:21:53,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:21:53,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:21:53,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:21:53,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:21:53,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:21:53,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:21:53,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:21:53,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:21:53,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:21:53,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:21:53,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:21:53,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:21:53,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:21:53,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:21:53,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:21:53,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:21:53,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:21:53,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:21:53,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:21:53,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:21:53,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:21:53,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:21:53,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:21:53,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:21:53,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:21:53,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:21:53,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:21:53,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:21:53,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:21:53,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:21:53,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 10:21:53,550 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:21:53,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:21:53,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:21:53,550 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:21:53,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 10:21:53,551 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:21:53,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 10:21:53,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 10:21:53,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 10:21:53,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:21:53,552 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:21:53,553 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:21:53,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:21:53,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:21:53,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:21:53,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 10:21:53,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:21:53,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:21:53,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:21:53,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:21:53,555 INFO L138 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/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-12-07 10:21:53,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:21:53,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:21:53,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:21:53,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:21:53,661 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:21:53,662 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-12-07 10:21:53,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/2adedea96/9f45ea56b1214c2bb2d83a46a307cfe5/FLAG8066aae48 [2019-12-07 10:21:54,094 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:21:54,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-12-07 10:21:54,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/2adedea96/9f45ea56b1214c2bb2d83a46a307cfe5/FLAG8066aae48 [2019-12-07 10:21:54,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/2adedea96/9f45ea56b1214c2bb2d83a46a307cfe5 [2019-12-07 10:21:54,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:21:54,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:21:54,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:21:54,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:21:54,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:21:54,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d86038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54, skipping insertion in model container [2019-12-07 10:21:54,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:21:54,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:21:54,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:21:54,293 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:21:54,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:21:54,326 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:21:54,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54 WrapperNode [2019-12-07 10:21:54,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:21:54,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:21:54,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:21:54,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:21:54,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:21:54,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:21:54,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:21:54,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:21:54,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... [2019-12-07 10:21:54,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:21:54,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:21:54,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:21:54,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:21:54,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:21:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:21:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:21:54,593 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:21:54,593 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:21:54,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:54 BoogieIcfgContainer [2019-12-07 10:21:54,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:21:54,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:21:54,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:21:54,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:21:54,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:21:54" (1/3) ... [2019-12-07 10:21:54,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf3fe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:21:54, skipping insertion in model container [2019-12-07 10:21:54,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:54" (2/3) ... [2019-12-07 10:21:54,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf3fe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:21:54, skipping insertion in model container [2019-12-07 10:21:54,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:54" (3/3) ... [2019-12-07 10:21:54,601 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-12-07 10:21:54,608 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:21:54,613 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:21:54,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:21:54,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:21:54,635 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:21:54,635 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:21:54,635 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:21:54,635 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:21:54,635 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:21:54,635 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:21:54,635 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:21:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 10:21:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 10:21:54,649 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:54,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:54,650 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:54,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash 801951134, now seen corresponding path program 1 times [2019-12-07 10:21:54,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:21:54,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2807939] [2019-12-07 10:21:54,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:21:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:21:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:54,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2807939] [2019-12-07 10:21:54,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:21:54,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:21:54,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962082272] [2019-12-07 10:21:54,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:21:54,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:21:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:21:54,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:21:54,746 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-12-07 10:21:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:21:54,761 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2019-12-07 10:21:54,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:21:54,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 10:21:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:21:54,770 INFO L225 Difference]: With dead ends: 35 [2019-12-07 10:21:54,770 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 10:21:54,773 INFO L630 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 [2019-12-07 10:21:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 10:21:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 10:21:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 10:21:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-12-07 10:21:54,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2019-12-07 10:21:54,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:21:54,800 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-12-07 10:21:54,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:21:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-12-07 10:21:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 10:21:54,800 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:54,800 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:54,800 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1343389023, now seen corresponding path program 1 times [2019-12-07 10:21:54,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:21:54,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639887578] [2019-12-07 10:21:54,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:21:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:21:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:21:54,871 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 10:21:54,871 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:21:54,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:21:54 BoogieIcfgContainer [2019-12-07 10:21:54,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:21:54,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:21:54,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:21:54,887 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:21:54,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:54" (3/4) ... [2019-12-07 10:21:54,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:21:54,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:21:54,891 INFO L168 Benchmark]: Toolchain (without parser) took 780.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -107.5 MB). Peak memory consumption was 456.9 kB. Max. memory is 11.5 GB. [2019-12-07 10:21:54,892 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:21:54,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:54,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:21:54,893 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:54,893 INFO L168 Benchmark]: RCFGBuilder took 216.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:54,894 INFO L168 Benchmark]: TraceAbstraction took 292.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:54,894 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:21:54,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 292.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] float res = trunc_float(x); [L44] return x != x; [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 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=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 10:21:56,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:21:56,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:21:56,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:21:56,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:21:56,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:21:56,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:21:56,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:21:56,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:21:56,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:21:56,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:21:56,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:21:56,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:21:56,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:21:56,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:21:56,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:21:56,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:21:56,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:21:56,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:21:56,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:21:56,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:21:56,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:21:56,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:21:56,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:21:56,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:21:56,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:21:56,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:21:56,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:21:56,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:21:56,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:21:56,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:21:56,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:21:56,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:21:56,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:21:56,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:21:56,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:21:56,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:21:56,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:21:56,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:21:56,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:21:56,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:21:56,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 10:21:56,354 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:21:56,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:21:56,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:21:56,355 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:21:56,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:21:56,355 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:21:56,355 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:21:56,356 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:21:56,356 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:21:56,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:21:56,356 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:21:56,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 10:21:56,357 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:21:56,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:21:56,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:21:56,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 10:21:56,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 10:21:56,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:21:56,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:21:56,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:21:56,360 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-12-07 10:21:56,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:21:56,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:21:56,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:21:56,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:21:56,544 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:21:56,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-12-07 10:21:56,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/a846a972c/0eb239fb6d65474490ece70535babfbc/FLAGe37c087fc [2019-12-07 10:21:57,051 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:21:57,052 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-12-07 10:21:57,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/a846a972c/0eb239fb6d65474490ece70535babfbc/FLAGe37c087fc [2019-12-07 10:21:57,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/data/a846a972c/0eb239fb6d65474490ece70535babfbc [2019-12-07 10:21:57,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:21:57,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:21:57,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:21:57,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:21:57,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:21:57,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c373434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57, skipping insertion in model container [2019-12-07 10:21:57,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:21:57,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:21:57,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:21:57,199 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:21:57,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:21:57,231 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:21:57,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57 WrapperNode [2019-12-07 10:21:57,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:21:57,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:21:57,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:21:57,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:21:57,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:21:57,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:21:57,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:21:57,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:21:57,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... [2019-12-07 10:21:57,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:21:57,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:21:57,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:21:57,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:21:57,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:21:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 10:21:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 10:21:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:21:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:21:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 10:21:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 10:21:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:21:57,525 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:21:57,526 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 10:21:57,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:57 BoogieIcfgContainer [2019-12-07 10:21:57,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:21:57,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:21:57,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:21:57,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:21:57,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:21:57" (1/3) ... [2019-12-07 10:21:57,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2361afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:21:57, skipping insertion in model container [2019-12-07 10:21:57,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:21:57" (2/3) ... [2019-12-07 10:21:57,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2361afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:21:57, skipping insertion in model container [2019-12-07 10:21:57,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:57" (3/3) ... [2019-12-07 10:21:57,532 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-12-07 10:21:57,538 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:21:57,542 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:21:57,549 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:21:57,565 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:21:57,566 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:21:57,566 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:21:57,566 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:21:57,566 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:21:57,566 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:21:57,566 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:21:57,566 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:21:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-12-07 10:21:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:21:57,580 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:57,580 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:57,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:57,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-12-07 10:21:57,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:21:57,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102012094] [2019-12-07 10:21:57,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:21:57,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 10:21:57,665 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:21:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:57,674 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:21:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:57,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102012094] [2019-12-07 10:21:57,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:21:57,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 10:21:57,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329185950] [2019-12-07 10:21:57,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:21:57,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:21:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:21:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:21:57,693 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-12-07 10:21:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:21:57,705 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-12-07 10:21:57,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:21:57,707 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 10:21:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:21:57,713 INFO L225 Difference]: With dead ends: 40 [2019-12-07 10:21:57,713 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 10:21:57,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:21:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 10:21:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 10:21:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 10:21:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-12-07 10:21:57,739 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-12-07 10:21:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:21:57,740 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-12-07 10:21:57,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:21:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-12-07 10:21:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:21:57,740 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:57,740 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:57,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 10:21:57,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-12-07 10:21:57,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:21:57,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349132058] [2019-12-07 10:21:57,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:21:58,021 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 10:21:58,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:21:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:58,074 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:21:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:58,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349132058] [2019-12-07 10:21:58,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:21:58,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-12-07 10:21:58,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43960994] [2019-12-07 10:21:58,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:21:58,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:21:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:21:58,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:21:58,101 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-12-07 10:21:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:21:58,152 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 10:21:58,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:21:58,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 10:21:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:21:58,154 INFO L225 Difference]: With dead ends: 29 [2019-12-07 10:21:58,154 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 10:21:58,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:21:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 10:21:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-12-07 10:21:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 10:21:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-12-07 10:21:58,160 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2019-12-07 10:21:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:21:58,160 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-12-07 10:21:58,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:21:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-12-07 10:21:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:21:58,161 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:58,161 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:58,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 10:21:58,362 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2019-12-07 10:21:58,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:21:58,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949057573] [2019-12-07 10:21:58,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:21:58,506 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 10:21:58,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:21:58,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 10:21:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:58,566 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:21:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:58,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949057573] [2019-12-07 10:21:58,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:21:58,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 10:21:58,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749691843] [2019-12-07 10:21:58,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 10:21:58,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:21:58,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 10:21:58,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:21:58,622 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2019-12-07 10:21:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:21:58,844 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-12-07 10:21:58,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:21:58,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-12-07 10:21:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:21:58,845 INFO L225 Difference]: With dead ends: 24 [2019-12-07 10:21:58,845 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 10:21:58,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 10:21:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 10:21:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 10:21:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 10:21:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 10:21:58,848 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-12-07 10:21:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:21:58,849 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 10:21:58,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 10:21:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 10:21:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:21:58,849 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:21:58,849 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:21:59,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 10:21:59,051 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:21:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:21:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2019-12-07 10:21:59,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 10:21:59,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138391361] [2019-12-07 10:21:59,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/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 [2019-12-07 10:21:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:21:59,160 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 10:21:59,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:21:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:59,219 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:21:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:21:59,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138391361] [2019-12-07 10:21:59,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:21:59,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 10:21:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219583534] [2019-12-07 10:21:59,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 10:21:59,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 10:21:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 10:21:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:21:59,309 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2019-12-07 10:21:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:21:59,410 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 10:21:59,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:21:59,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-12-07 10:21:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:21:59,411 INFO L225 Difference]: With dead ends: 17 [2019-12-07 10:21:59,411 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:21:59,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:21:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:21:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:21:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:21:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:21:59,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 10:21:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:21:59,413 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:21:59,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 10:21:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:21:59,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:21:59,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 10:21:59,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 10:21:59,757 INFO L246 CegarLoopResult]: For program point L56(lines 56 59) no Hoare annotation was computed. [2019-12-07 10:21:59,757 INFO L242 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 10:21:59,757 INFO L242 CegarLoopResult]: At program point L40(lines 12 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 10:21:59,757 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 10:21:59,757 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 10:21:59,757 INFO L249 CegarLoopResult]: At program point L61(lines 46 62) the Hoare annotation is: true [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L242 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L21(lines 21 39) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L21-1(lines 21 39) no Hoare annotation was computed. [2019-12-07 10:21:59,758 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-12-07 10:21:59,759 INFO L242 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: false [2019-12-07 10:21:59,759 INFO L246 CegarLoopResult]: For program point L22(lines 22 35) no Hoare annotation was computed. [2019-12-07 10:21:59,759 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-12-07 10:21:59,759 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) [2019-12-07 10:21:59,759 INFO L246 CegarLoopResult]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2019-12-07 10:21:59,766 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,766 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,766 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:21:59 BoogieIcfgContainer [2019-12-07 10:21:59,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:21:59,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:21:59,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:21:59,777 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:21:59,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:21:57" (3/4) ... [2019-12-07 10:21:59,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:21:59,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 10:21:59,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 10:21:59,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:21:59,810 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2019-12-07 10:21:59,810 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 10:21:59,811 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 10:21:59,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_602442de-413c-44e4-a68c-1f5e919a0fa5/bin/utaipan/witness.graphml [2019-12-07 10:21:59,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:21:59,828 INFO L168 Benchmark]: Toolchain (without parser) took 2760.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 952.4 MB in the beginning and 948.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 118.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,828 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:21:59,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,829 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,829 INFO L168 Benchmark]: RCFGBuilder took 214.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,830 INFO L168 Benchmark]: TraceAbstraction took 2248.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,830 INFO L168 Benchmark]: Witness Printer took 49.85 ms. Allocated memory is still 1.1 GB. Free memory was 955.7 MB in the beginning and 948.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:21:59,832 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2248.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. * Witness Printer took 49.85 ms. Allocated memory is still 1.1 GB. Free memory was 955.7 MB in the beginning and 948.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant [2019-12-07 10:21:59,836 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 14]: Loop Invariant [2019-12-07 10:21:59,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-12-07 10:21:59,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 10:21:59,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-12-07 10:21:59,839 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3279 SizeOfPredicates, 21 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...