./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.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_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ............................................................................................................................................................................................................................................................................................ 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_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 b865bb4da04412be07ba7e2426d2224bb04a2953 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:33:32,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:33:32,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:33:32,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:33:32,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:33:32,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:33:32,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:33:32,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:33:32,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:33:32,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:33:32,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:33:32,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:33:32,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:33:32,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:33:32,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:33:32,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:33:32,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:33:32,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:33:32,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:33:32,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:33:32,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:33:32,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:33:32,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:33:32,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:33:32,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:33:32,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:33:32,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:33:32,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:33:32,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:33:32,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:33:32,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:33:32,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:33:32,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:33:32,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:33:32,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:33:32,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:33:32,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:33:32,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:33:32,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:33:32,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:33:32,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:33:32,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:33:32,304 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:33:32,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:33:32,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:33:32,313 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:33:32,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:33:32,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:33:32,315 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:33:32,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:33:32,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:33:32,315 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:33:32,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:33:32,316 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:33:32,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:33:32,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:33:32,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:33:32,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:33:32,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:33:32,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:33:32,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:33:32,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:32,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:33:32,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:33:32,320 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_86552cd5-c134-4f9c-855a-52228c95a71a/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-26 02:33:32,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:33:32,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:33:32,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:33:32,469 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:33:32,470 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:33:32,470 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-26 02:33:32,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/28e545118/5d3f127ecd77474199caf22567898436/FLAGdf22aed2d [2019-11-26 02:33:32,945 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:33:32,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-26 02:33:32,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/28e545118/5d3f127ecd77474199caf22567898436/FLAGdf22aed2d [2019-11-26 02:33:32,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/28e545118/5d3f127ecd77474199caf22567898436 [2019-11-26 02:33:32,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:33:32,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:33:32,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:32,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:33:32,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:33:32,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:32" (1/1) ... [2019-11-26 02:33:32,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb41984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:32, skipping insertion in model container [2019-11-26 02:33:32,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:32" (1/1) ... [2019-11-26 02:33:32,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:33:33,014 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:33:33,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:33,248 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:33:33,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:33,312 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:33:33,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33 WrapperNode [2019-11-26 02:33:33,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:33,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:33,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:33:33,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:33:33,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:33,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:33:33,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:33:33,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:33:33,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... [2019-11-26 02:33:33,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:33:33,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:33:33,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:33:33,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:33:33,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:33:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:33:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:33:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:33:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:33:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:33:34,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:33:34,169 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:33:34,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:34 BoogieIcfgContainer [2019-11-26 02:33:34,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:33:34,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:33:34,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:33:34,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:33:34,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:33:32" (1/3) ... [2019-11-26 02:33:34,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc998e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:34, skipping insertion in model container [2019-11-26 02:33:34,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:33" (2/3) ... [2019-11-26 02:33:34,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc998e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:34, skipping insertion in model container [2019-11-26 02:33:34,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:34" (3/3) ... [2019-11-26 02:33:34,184 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-26 02:33:34,196 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:33:34,204 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:33:34,211 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:33:34,233 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:33:34,233 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:33:34,233 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:33:34,234 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:33:34,234 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:33:34,234 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:33:34,234 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:33:34,234 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:33:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-26 02:33:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:33:34,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:34,254 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:34,254 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1739599954, now seen corresponding path program 1 times [2019-11-26 02:33:34,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:34,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036556787] [2019-11-26 02:33:34,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:34,352 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 02:33:34,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036556787] [2019-11-26 02:33:34,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:34,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:33:34,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703808144] [2019-11-26 02:33:34,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:33:34,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:34,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:33:34,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:33:34,373 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-26 02:33:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:34,386 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-11-26 02:33:34,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:33:34,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:33:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:34,394 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:33:34,394 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:33:34,397 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 02:33:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:33:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:33:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:33:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:33:34,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-11-26 02:33:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:34,427 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:33:34,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:33:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:33:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:33:34,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:34,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:34,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:34,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1291202669, now seen corresponding path program 1 times [2019-11-26 02:33:34,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:34,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150012980] [2019-11-26 02:33:34,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:33:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:33:34,536 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:33:34,536 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:33:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:33:34 BoogieIcfgContainer [2019-11-26 02:33:34,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:33:34,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:33:34,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:33:34,558 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:33:34,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:34" (3/4) ... [2019-11-26 02:33:34,562 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:33:34,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:33:34,564 INFO L168 Benchmark]: Toolchain (without parser) took 1591.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:34,564 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:34,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:34,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:34,566 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:34,567 INFO L168 Benchmark]: RCFGBuilder took 782.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:34,568 INFO L168 Benchmark]: TraceAbstraction took 385.92 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:34,568 INFO L168 Benchmark]: Witness Printer took 4.26 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 02:33:34,571 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 337.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 782.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 385.92 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L63] double res = fmin_double(x, y); [L16] return x != x; [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 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=14occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 02:33:36,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:33:36,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:33:36,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:33:36,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:33:36,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:33:36,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:33:36,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:33:36,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:33:36,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:33:36,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:33:36,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:33:36,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:33:36,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:33:36,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:33:36,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:33:36,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:33:36,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:33:36,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:33:36,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:33:36,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:33:36,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:33:36,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:33:36,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:33:36,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:33:36,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:33:36,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:33:36,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:33:36,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:33:36,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:33:36,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:33:36,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:33:36,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:33:36,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:33:36,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:33:36,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:33:36,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:33:36,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:33:36,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:33:36,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:33:36,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:33:36,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:33:36,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:33:36,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:33:36,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:33:36,586 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:33:36,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:33:36,587 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:33:36,587 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:33:36,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:33:36,588 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:33:36,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:33:36,590 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:33:36,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:33:36,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:33:36,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:33:36,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:33:36,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:33:36,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:33:36,592 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:33:36,592 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:33:36,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:33:36,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:33:36,593 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:33:36,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:33:36,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:33:36,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:33:36,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:33:36,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:33:36,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:36,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:33:36,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:33:36,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:33:36,596 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:33:36,596 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:33:36,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:33:36,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:33:36,597 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_86552cd5-c134-4f9c-855a-52228c95a71a/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-26 02:33:36,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:33:36,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:33:36,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:33:36,872 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:33:36,873 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:33:36,873 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-26 02:33:36,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/cf63070d7/fc642614f06345dab14677ff3e22c3f6/FLAG08d82dea7 [2019-11-26 02:33:37,383 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:33:37,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-26 02:33:37,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/cf63070d7/fc642614f06345dab14677ff3e22c3f6/FLAG08d82dea7 [2019-11-26 02:33:37,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/data/cf63070d7/fc642614f06345dab14677ff3e22c3f6 [2019-11-26 02:33:37,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:33:37,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:33:37,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:37,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:33:37,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:33:37,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:37" (1/1) ... [2019-11-26 02:33:37,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2769047b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:37, skipping insertion in model container [2019-11-26 02:33:37,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:37" (1/1) ... [2019-11-26 02:33:37,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:33:37,771 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:33:37,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:37,968 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:33:37,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:38,019 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:33:38,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38 WrapperNode [2019-11-26 02:33:38,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:38,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:38,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:33:38,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:33:38,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:38,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:33:38,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:33:38,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:33:38,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... [2019-11-26 02:33:38,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:33:38,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:33:38,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:33:38,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:33:38,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-26 02:33:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:33:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:33:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:33:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:33:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:33:38,591 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:33:38,591 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-26 02:33:38,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:38 BoogieIcfgContainer [2019-11-26 02:33:38,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:33:38,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:33:38,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:33:38,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:33:38,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:33:37" (1/3) ... [2019-11-26 02:33:38,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c4c17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:38, skipping insertion in model container [2019-11-26 02:33:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:38" (2/3) ... [2019-11-26 02:33:38,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c4c17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:38, skipping insertion in model container [2019-11-26 02:33:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:38" (3/3) ... [2019-11-26 02:33:38,599 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-26 02:33:38,608 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:33:38,613 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:33:38,622 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:33:38,640 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:33:38,640 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:33:38,640 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:33:38,640 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:33:38,640 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:33:38,640 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:33:38,640 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:33:38,641 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:33:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:33:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:33:38,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:38,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:38,656 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:38,661 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-26 02:33:38,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:38,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467202290] [2019-11-26 02:33:38,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:38,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:33:38,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:38,780 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 02:33:38,780 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:38,783 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 02:33:38,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467202290] [2019-11-26 02:33:38,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:38,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:33:38,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891577479] [2019-11-26 02:33:38,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:33:38,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:38,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:33:38,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:33:38,801 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-26 02:33:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:38,814 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-26 02:33:38,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:33:38,816 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:33:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:38,824 INFO L225 Difference]: With dead ends: 54 [2019-11-26 02:33:38,825 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:33:38,827 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 02:33:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:33:38,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-26 02:33:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:33:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-26 02:33:38,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-26 02:33:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:38,852 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-26 02:33:38,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:33:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-26 02:33:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:33:38,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:38,853 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:39,054 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:33:39,054 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-26 02:33:39,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:39,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803911834] [2019-11-26 02:33:39,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:39,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:33:39,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:39,198 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 02:33:39,198 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:39,230 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 02:33:39,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803911834] [2019-11-26 02:33:39,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:39,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:33:39,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756601817] [2019-11-26 02:33:39,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:33:39,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:33:39,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:33:39,235 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-26 02:33:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:39,356 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-26 02:33:39,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:39,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-26 02:33:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:39,359 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:33:39,359 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:33:39,360 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 02:33:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:33:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:33:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:33:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-26 02:33:39,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-26 02:33:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:39,376 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-26 02:33:39,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:33:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-26 02:33:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:33:39,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:39,379 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:39,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:33:39,601 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:39,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:39,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-26 02:33:39,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:39,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746743341] [2019-11-26 02:33:39,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:39,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:33:39,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:39,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:39,823 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 02:33:39,823 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:39,925 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 02:33:39,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746743341] [2019-11-26 02:33:39,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:39,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:33:39,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771615392] [2019-11-26 02:33:39,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:33:39,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:33:39,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:33:39,927 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-26 02:33:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:40,245 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-26 02:33:40,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:40,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-26 02:33:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:40,247 INFO L225 Difference]: With dead ends: 36 [2019-11-26 02:33:40,247 INFO L226 Difference]: Without dead ends: 27 [2019-11-26 02:33:40,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:33:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-26 02:33:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-26 02:33:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:33:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-26 02:33:40,255 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-26 02:33:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:40,256 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-26 02:33:40,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:33:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-26 02:33:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:33:40,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:40,257 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:40,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:33:40,458 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-26 02:33:40,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:40,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084810506] [2019-11-26 02:33:40,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:40,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:33:40,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:40,588 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 02:33:40,589 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:40,608 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 02:33:40,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084810506] [2019-11-26 02:33:40,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:40,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:33:40,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354631518] [2019-11-26 02:33:40,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:33:40,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:33:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:33:40,610 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-26 02:33:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:40,709 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-26 02:33:40,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:40,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-26 02:33:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:40,713 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:33:40,713 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:33:40,714 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 02:33:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:33:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-26 02:33:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 02:33:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-26 02:33:40,724 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-26 02:33:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:40,726 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-26 02:33:40,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:33:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-26 02:33:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:33:40,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:40,727 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 02:33:40,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:33:40,943 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-26 02:33:40,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:40,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454043441] [2019-11-26 02:33:40,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:41,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:33:41,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:41,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:41,148 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 02:33:41,148 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:41,295 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 02:33:41,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454043441] [2019-11-26 02:33:41,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:41,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-26 02:33:41,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92648247] [2019-11-26 02:33:41,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:33:41,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:41,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:33:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:33:41,297 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-26 02:33:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:41,706 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-26 02:33:41,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:33:41,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-26 02:33:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:41,707 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:33:41,707 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:33:41,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:33:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:33:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-26 02:33:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:33:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-26 02:33:41,713 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-26 02:33:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:41,713 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-26 02:33:41,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:33:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-26 02:33:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:33:41,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:41,714 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 02:33:41,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-26 02:33:41,915 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-26 02:33:41,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:41,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856191037] [2019-11-26 02:33:41,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/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 02:33:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:42,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:33:42,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:42,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:42,145 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 02:33:42,146 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:42,222 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 02:33:42,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856191037] [2019-11-26 02:33:42,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:42,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:33:42,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347698604] [2019-11-26 02:33:42,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:33:42,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:42,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:33:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:33:42,224 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-26 02:33:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:42,453 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-26 02:33:42,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:42,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-26 02:33:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:42,453 INFO L225 Difference]: With dead ends: 23 [2019-11-26 02:33:42,454 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:33:42,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:33:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:33:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:33:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:33:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:33:42,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-26 02:33:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:42,455 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:33:42,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:33:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:33:42,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:33:42,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-26 02:33:42,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:33:42,969 INFO L444 ceAbstractionStarter]: For program point L65(lines 65 68) no Hoare annotation was computed. [2019-11-26 02:33:42,970 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:33:42,970 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:33:42,970 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:33:42,970 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2019-11-26 02:33:42,970 INFO L444 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2019-11-26 02:33:42,971 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-26 02:33:42,971 INFO L444 ceAbstractionStarter]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2019-11-26 02:33:42,971 INFO L440 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-11-26 02:33:42,971 INFO L444 ceAbstractionStarter]: For program point L20-5(lines 20 25) no Hoare annotation was computed. [2019-11-26 02:33:42,971 INFO L440 ceAbstractionStarter]: At program point L20-6(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-26 02:33:42,971 INFO L444 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-26 02:33:42,971 INFO L444 ceAbstractionStarter]: For program point L20-7(lines 17 42) no Hoare annotation was computed. [2019-11-26 02:33:42,972 INFO L440 ceAbstractionStarter]: At program point L41(lines 17 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-26 02:33:42,972 INFO L440 ceAbstractionStarter]: At program point L41-1(lines 17 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2019-11-26 02:33:42,972 INFO L447 ceAbstractionStarter]: At program point L70(lines 53 71) the Hoare annotation is: true [2019-11-26 02:33:42,972 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-11-26 02:33:42,972 INFO L444 ceAbstractionStarter]: For program point L37-1(lines 37 41) no Hoare annotation was computed. [2019-11-26 02:33:42,972 INFO L444 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point L33-1(lines 33 41) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-26 02:33:42,973 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 44 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|))) [2019-11-26 02:33:42,973 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2019-11-26 02:33:42,974 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 41) no Hoare annotation was computed. [2019-11-26 02:33:42,974 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 48) no Hoare annotation was computed. [2019-11-26 02:33:42,980 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:42,987 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:42,989 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:42,991 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:43,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:33:43 BoogieIcfgContainer [2019-11-26 02:33:43,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:33:43,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:33:43,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:33:43,013 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:33:43,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:38" (3/4) ... [2019-11-26 02:33:43,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:33:43,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:33:43,032 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:33:43,032 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:33:43,055 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) [2019-11-26 02:33:43,056 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2019-11-26 02:33:43,056 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-11-26 02:33:43,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_86552cd5-c134-4f9c-855a-52228c95a71a/bin/utaipan/witness.graphml [2019-11-26 02:33:43,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:33:43,091 INFO L168 Benchmark]: Toolchain (without parser) took 5357.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 960.4 MB in the beginning and 874.5 MB in the end (delta: 86.0 MB). Peak memory consumption was 220.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:43,091 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:43,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.43 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:43,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:43,092 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 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 02:33:43,092 INFO L168 Benchmark]: RCFGBuilder took 449.92 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:43,093 INFO L168 Benchmark]: TraceAbstraction took 4419.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 874.5 MB in the end (delta: 218.4 MB). Peak memory consumption was 218.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:43,093 INFO L168 Benchmark]: Witness Printer took 75.84 ms. Allocated memory is still 1.2 GB. Free memory is still 874.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:43,095 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 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.43 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.43 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 449.92 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4419.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 874.5 MB in the end (delta: 218.4 MB). Peak memory consumption was 218.4 MB. Max. memory is 11.5 GB. * Witness Printer took 75.84 ms. Allocated memory is still 1.2 GB. Free memory is still 874.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: 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: 44]: Loop Invariant [2019-11-26 02:33:43,104 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:43,105 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 16]: Loop Invariant [2019-11-26 02:33:43,107 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:33:43,108 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...