./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 f441bd4a1f5705911b7315c074b39e665542818e ........................................................................................................................................................................................................................................................................................ 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_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 f441bd4a1f5705911b7315c074b39e665542818e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:54:29,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:54:29,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:54:29,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:54:29,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:54:29,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:54:29,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:54:29,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:54:29,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:54:29,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:54:29,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:54:29,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:54:29,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:54:29,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:54:29,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:54:29,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:54:29,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:54:29,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:54:29,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:54:29,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:54:29,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:54:29,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:54:29,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:54:29,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:54:29,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:54:29,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:54:29,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:54:29,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:54:29,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:54:29,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:54:29,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:54:29,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:54:29,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:54:29,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:54:29,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:54:29,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:54:29,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:54:29,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:54:29,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:54:29,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:54:29,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:54:29,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:54:29,314 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:54:29,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:54:29,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:54:29,315 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:54:29,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:54:29,316 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:54:29,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:54:29,316 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:54:29,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:54:29,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:54:29,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:54:29,317 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:54:29,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:54:29,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:54:29,318 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:54:29,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:54:29,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:54:29,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:54:29,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:54:29,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:54:29,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:54:29,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:54:29,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:54:29,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:54:29,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:54:29,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:54:29,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:54:29,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:54:29,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:54:29,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:54:29,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:54:29,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:54:29,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:54:29,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:54:29,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:54:29,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:54:29,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:54:29,323 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_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-26 02:54:29,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:54:29,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:54:29,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:54:29,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:54:29,504 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:54:29,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-26 02:54:29,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/36f47f829/0bb3d39c093f49ff80a3bab0f04b3888/FLAG0d2d40f3e [2019-11-26 02:54:29,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:54:29,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-26 02:54:29,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/36f47f829/0bb3d39c093f49ff80a3bab0f04b3888/FLAG0d2d40f3e [2019-11-26 02:54:30,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/36f47f829/0bb3d39c093f49ff80a3bab0f04b3888 [2019-11-26 02:54:30,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:54:30,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:54:30,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:30,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:54:30,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:54:30,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e828781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30, skipping insertion in model container [2019-11-26 02:54:30,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:54:30,326 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:54:30,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:30,563 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:54:30,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:30,696 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:54:30,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30 WrapperNode [2019-11-26 02:54:30,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:30,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:30,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:54:30,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:54:30,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:30,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:54:30,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:54:30,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:54:30,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... [2019-11-26 02:54:30,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:54:30,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:54:30,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:54:30,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:54:30,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:54:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:54:30,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:54:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:54:30,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:54:30,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:54:31,419 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:54:31,420 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:54:31,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:31 BoogieIcfgContainer [2019-11-26 02:54:31,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:54:31,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:54:31,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:54:31,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:54:31,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:54:30" (1/3) ... [2019-11-26 02:54:31,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536e0950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:31, skipping insertion in model container [2019-11-26 02:54:31,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:30" (2/3) ... [2019-11-26 02:54:31,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536e0950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:31, skipping insertion in model container [2019-11-26 02:54:31,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:31" (3/3) ... [2019-11-26 02:54:31,428 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-26 02:54:31,437 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:54:31,443 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:54:31,453 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:54:31,473 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:54:31,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:54:31,474 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:54:31,474 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:54:31,474 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:54:31,474 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:54:31,474 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:54:31,475 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:54:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:54:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:54:31,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:31,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:31,496 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2019-11-26 02:54:31,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:31,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302768514] [2019-11-26 02:54:31,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:31,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302768514] [2019-11-26 02:54:31,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:31,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:54:31,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869268661] [2019-11-26 02:54:31,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:54:31,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:54:31,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:54:31,635 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:54:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:31,652 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2019-11-26 02:54:31,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:54:31,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:54:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:31,663 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:54:31,663 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:54:31,666 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 [2019-11-26 02:54:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:54:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:54:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:54:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-26 02:54:31,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2019-11-26 02:54:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:31,694 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-26 02:54:31,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:54:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-26 02:54:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:54:31,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:31,695 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:31,696 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:31,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2019-11-26 02:54:31,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:31,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566726084] [2019-11-26 02:54:31,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:31,776 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:54:31,776 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:54:31,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:31 BoogieIcfgContainer [2019-11-26 02:54:31,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:31,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:31,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:31,802 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:31,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:31" (3/4) ... [2019-11-26 02:54:31,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:54:31,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:31,808 INFO L168 Benchmark]: Toolchain (without parser) took 1519.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -105.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:31,808 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:31,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:31,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:31,810 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:31,811 INFO L168 Benchmark]: RCFGBuilder took 651.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:31,812 INFO L168 Benchmark]: TraceAbstraction took 379.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:31,812 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:31,815 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 407.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 651.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 379.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 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 0.1.24-6b5699a [2019-11-26 02:54:33,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:54:33,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:54:33,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:54:33,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:54:33,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:54:33,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:54:33,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:54:33,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:54:33,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:54:33,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:54:33,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:54:33,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:54:33,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:54:33,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:54:33,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:54:33,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:54:33,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:54:33,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:54:33,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:54:33,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:54:33,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:54:33,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:54:33,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:54:33,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:54:33,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:54:33,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:54:33,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:54:33,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:54:33,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:54:33,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:54:33,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:54:33,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:54:33,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:54:33,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:54:33,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:54:33,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:54:33,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:54:33,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:54:33,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:54:33,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:54:33,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:54:33,791 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:54:33,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:54:33,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:54:33,802 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:54:33,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:54:33,803 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:54:33,803 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:54:33,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:54:33,803 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:54:33,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:54:33,805 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:54:33,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:54:33,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:54:33,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:54:33,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:54:33,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:54:33,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:54:33,807 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:54:33,807 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:54:33,807 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:54:33,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:54:33,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:54:33,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:54:33,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:54:33,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:54:33,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:54:33,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:54:33,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:54:33,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:54:33,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:54:33,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:54:33,811 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:54:33,811 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:54:33,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:54:33,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:54:33,812 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_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-26 02:54:34,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:54:34,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:54:34,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:54:34,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:54:34,114 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:54:34,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-26 02:54:34,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/b3227a99a/1366f3687b274a2aaca21e0a4804bd83/FLAG399c2f619 [2019-11-26 02:54:34,593 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:54:34,593 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-26 02:54:34,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/b3227a99a/1366f3687b274a2aaca21e0a4804bd83/FLAG399c2f619 [2019-11-26 02:54:35,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/data/b3227a99a/1366f3687b274a2aaca21e0a4804bd83 [2019-11-26 02:54:35,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:54:35,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:54:35,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:35,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:54:35,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:54:35,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa8959d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35, skipping insertion in model container [2019-11-26 02:54:35,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:54:35,069 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:54:35,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:35,223 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:54:35,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:35,269 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:54:35,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35 WrapperNode [2019-11-26 02:54:35,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:35,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:35,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:54:35,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:54:35,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:35,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:54:35,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:54:35,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:54:35,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... [2019-11-26 02:54:35,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:54:35,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:54:35,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:54:35,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:54:35,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:54:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:54:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:54:35,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:54:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:54:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:54:35,845 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:54:35,845 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:54:35,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:35 BoogieIcfgContainer [2019-11-26 02:54:35,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:54:35,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:54:35,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:54:35,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:54:35,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:54:35" (1/3) ... [2019-11-26 02:54:35,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aae7906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:35, skipping insertion in model container [2019-11-26 02:54:35,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:35" (2/3) ... [2019-11-26 02:54:35,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aae7906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:35, skipping insertion in model container [2019-11-26 02:54:35,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:35" (3/3) ... [2019-11-26 02:54:35,852 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-26 02:54:35,859 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:54:35,864 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:54:35,871 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:54:35,889 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:54:35,889 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:54:35,889 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:54:35,889 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:54:35,889 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:54:35,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:54:35,890 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:54:35,890 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:54:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-26 02:54:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:54:35,906 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:35,907 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:35,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:35,912 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-26 02:54:35,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:35,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423350686] [2019-11-26 02:54:35,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:36,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:54:36,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,020 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423350686] [2019-11-26 02:54:36,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:36,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:54:36,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907730999] [2019-11-26 02:54:36,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:54:36,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:54:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:54:36,039 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-26 02:54:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:36,053 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-26 02:54:36,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:54:36,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:54:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:36,062 INFO L225 Difference]: With dead ends: 62 [2019-11-26 02:54:36,063 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:54:36,065 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 [2019-11-26 02:54:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:54:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-26 02:54:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:54:36,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-26 02:54:36,093 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-26 02:54:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:36,094 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-26 02:54:36,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:54:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-26 02:54:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:54:36,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:36,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:36,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:54:36,296 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-26 02:54:36,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:36,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238504587] [2019-11-26 02:54:36,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:36,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:54:36,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,409 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238504587] [2019-11-26 02:54:36,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:36,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:54:36,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285274704] [2019-11-26 02:54:36,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:54:36,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:54:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:54:36,446 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-26 02:54:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:36,592 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-26 02:54:36,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:36,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:54:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:36,594 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:54:36,596 INFO L226 Difference]: Without dead ends: 59 [2019-11-26 02:54:36,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:54:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-26 02:54:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-26 02:54:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 02:54:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-26 02:54:36,611 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-26 02:54:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:36,612 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-26 02:54:36,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:54:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-26 02:54:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:54:36,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:36,619 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:36,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:54:36,833 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:36,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-26 02:54:36,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:36,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299657545] [2019-11-26 02:54:36,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:36,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:54:36,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,938 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:36,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299657545] [2019-11-26 02:54:36,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:36,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-26 02:54:36,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946856337] [2019-11-26 02:54:36,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:54:36,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:36,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:54:36,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:54:36,968 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-26 02:54:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:37,034 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-26 02:54:37,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:54:37,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-26 02:54:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:37,036 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:54:37,036 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:54:37,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:54:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:54:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-26 02:54:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:54:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 02:54:37,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-26 02:54:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:37,042 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 02:54:37,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:54:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 02:54:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:54:37,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:37,043 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:37,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:54:37,246 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:37,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-26 02:54:37,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:37,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153865194] [2019-11-26 02:54:37,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/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 [2019-11-26 02:54:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:37,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:54:37,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:37,332 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:37,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153865194] [2019-11-26 02:54:37,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:37,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:54:37,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417314484] [2019-11-26 02:54:37,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:54:37,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:37,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:54:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:54:37,356 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-26 02:54:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:37,438 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-26 02:54:37,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:37,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:54:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:37,440 INFO L225 Difference]: With dead ends: 61 [2019-11-26 02:54:37,440 INFO L226 Difference]: Without dead ends: 52 [2019-11-26 02:54:37,441 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:54:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-26 02:54:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-26 02:54:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:54:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-26 02:54:37,447 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-26 02:54:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:37,447 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-26 02:54:37,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:54:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-26 02:54:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:54:37,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:37,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:37,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:54:37,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-26 02:54:37,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:37,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206982972] [2019-11-26 02:54:37,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-26 02:54:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:37,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:54:37,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:37,768 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:37,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206982972] [2019-11-26 02:54:37,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:37,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:54:37,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729296247] [2019-11-26 02:54:37,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:54:37,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:37,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:54:37,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:54:37,797 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-26 02:54:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:37,814 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-26 02:54:37,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:54:37,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-26 02:54:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:37,817 INFO L225 Difference]: With dead ends: 38 [2019-11-26 02:54:37,817 INFO L226 Difference]: Without dead ends: 28 [2019-11-26 02:54:37,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:54:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-26 02:54:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-26 02:54:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-26 02:54:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-26 02:54:37,822 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-26 02:54:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:37,823 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-26 02:54:37,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:54:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-26 02:54:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:54:37,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:37,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:38,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:54:38,025 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-26 02:54:38,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:38,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023917662] [2019-11-26 02:54:38,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-26 02:54:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:38,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:54:38,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:38,144 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:38,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:38,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023917662] [2019-11-26 02:54:38,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:38,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:54:38,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100737507] [2019-11-26 02:54:38,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:54:38,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:54:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:54:38,204 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-26 02:54:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:38,318 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-26 02:54:38,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:54:38,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-26 02:54:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:38,320 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:54:38,320 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 02:54:38,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:54:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 02:54:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-26 02:54:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-26 02:54:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-26 02:54:38,325 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-26 02:54:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:38,325 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-26 02:54:38,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:54:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-26 02:54:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:54:38,327 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:38,327 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:38,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:54:38,528 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-26 02:54:38,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:38,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371821856] [2019-11-26 02:54:38,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-26 02:54:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:38,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:54:38,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:38,618 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:38,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371821856] [2019-11-26 02:54:38,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:38,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:54:38,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804791714] [2019-11-26 02:54:38,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:54:38,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:54:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:54:38,651 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-26 02:54:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:38,717 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-26 02:54:38,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:54:38,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-26 02:54:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:38,721 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:54:38,721 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:54:38,722 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:54:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:54:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:54:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:54:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-26 02:54:38,724 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-26 02:54:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:38,725 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-26 02:54:38,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:54:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-26 02:54:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:54:38,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:38,725 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:38,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-26 02:54:38,926 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:38,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-26 02:54:38,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:54:38,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931743219] [2019-11-26 02:54:38,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-26 02:54:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:39,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-26 02:54:39,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:39,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:39,144 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:39,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:54:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:39,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931743219] [2019-11-26 02:54:39,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:39,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-26 02:54:39,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950054598] [2019-11-26 02:54:39,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-26 02:54:39,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:54:39,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-26 02:54:39,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:54:39,410 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-26 02:54:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:39,635 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-26 02:54:39,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:54:39,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-26 02:54:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:39,638 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:54:39,638 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:54:39,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:54:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:54:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:54:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:54:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:54:39,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-26 02:54:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:39,640 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:54:39,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-26 02:54:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:54:39,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:54:39,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-26 02:54:39,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:54:40,138 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-26 02:54:40,138 INFO L444 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-26 02:54:40,138 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:54:40,138 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:54:40,139 INFO L444 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-26 02:54:40,139 INFO L444 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-11-26 02:54:40,139 INFO L440 ceAbstractionStarter]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-11-26 02:54:40,139 INFO L444 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-26 02:54:40,139 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-26 02:54:40,140 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-26 02:54:40,140 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-26 02:54:40,140 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-11-26 02:54:40,140 INFO L444 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-26 02:54:40,140 INFO L444 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-26 02:54:40,140 INFO L440 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-26 02:54:40,141 INFO L444 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-26 02:54:40,141 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-26 02:54:40,141 INFO L440 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-11-26 02:54:40,141 INFO L440 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-26 02:54:40,142 INFO L444 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-11-26 02:54:40,142 INFO L440 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-11-26 02:54:40,142 INFO L444 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-11-26 02:54:40,142 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:54:40,142 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-11-26 02:54:40,142 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-26 02:54:40,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:54:40,143 INFO L444 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-26 02:54:40,143 INFO L447 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-11-26 02:54:40,143 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-26 02:54:40,143 INFO L444 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-26 02:54:40,143 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-11-26 02:54:40,143 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-26 02:54:40,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:40 BoogieIcfgContainer [2019-11-26 02:54:40,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:40,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:40,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:40,164 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:40,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:35" (3/4) ... [2019-11-26 02:54:40,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:54:40,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-26 02:54:40,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 02:54:40,183 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:54:40,206 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-11-26 02:54:40,206 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-11-26 02:54:40,207 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-11-26 02:54:40,207 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-11-26 02:54:40,208 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-11-26 02:54:40,251 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ec0a07ac-5a58-4c80-a9b8-91a0e7cd164f/bin/utaipan/witness.graphml [2019-11-26 02:54:40,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:40,253 INFO L168 Benchmark]: Toolchain (without parser) took 5219.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 955.1 MB in the beginning and 863.5 MB in the end (delta: 91.6 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:40,253 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-26 02:54:40,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.16 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:40,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -205.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:40,255 INFO L168 Benchmark]: Boogie Preprocessor took 43.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:40,255 INFO L168 Benchmark]: RCFGBuilder took 419.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:40,255 INFO L168 Benchmark]: TraceAbstraction took 4316.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 863.5 MB in the end (delta: 262.5 MB). Peak memory consumption was 262.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:40,256 INFO L168 Benchmark]: Witness Printer took 87.17 ms. Allocated memory is still 1.2 GB. Free memory is still 863.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:40,258 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 236.16 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 113.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -205.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 419.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4316.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 863.5 MB in the end (delta: 262.5 MB). Peak memory consumption was 262.5 MB. Max. memory is 11.5 GB. * Witness Printer took 87.17 ms. Allocated memory is still 1.2 GB. Free memory is still 863.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 42]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...