./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 588c8ae05db5b455b7a642d0c86b0e222c46f03c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:05:46,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:46,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:05:46,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:05:46,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:05:46,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:05:46,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:05:46,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:05:46,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:05:46,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:05:46,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:05:46,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:05:46,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:05:46,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:05:46,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:05:46,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:05:46,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:05:46,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:05:46,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:05:46,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:05:46,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:05:46,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:05:46,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:05:46,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:05:46,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:05:46,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:05:46,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:05:46,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:05:46,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:05:46,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:05:46,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:05:46,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:05:46,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:05:46,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:05:46,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:05:46,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:05:46,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:05:46,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:05:46,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:05:46,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:05:46,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:05:46,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:05:46,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:05:46,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:05:46,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:05:46,454 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:05:46,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:05:46,455 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:05:46,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:05:46,456 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:05:46,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:05:46,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:05:46,458 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:05:46,458 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:05:46,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:05:46,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:05:46,459 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:05:46,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:05:46,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:05:46,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:05:46,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:05:46,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:05:46,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:05:46,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:05:46,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:05:46,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:05:46,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:05:46,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:05:46,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:05:46,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:05:46,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:05:46,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:05:46,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:05:46,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:46,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:05:46,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:05:46,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:05:46,466 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:05:46,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:05:46,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:05:46,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:05:46,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:05:46,467 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-30 02:05:46,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:05:46,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:05:46,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:05:46,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:05:46,872 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:05:46,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-30 02:05:46,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/1b8f6cdc8/7d33825f24e84dae8f17780f4dba220b/FLAG7fadf3cd4 [2020-11-30 02:05:47,494 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:05:47,495 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-30 02:05:47,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/1b8f6cdc8/7d33825f24e84dae8f17780f4dba220b/FLAG7fadf3cd4 [2020-11-30 02:05:47,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/1b8f6cdc8/7d33825f24e84dae8f17780f4dba220b [2020-11-30 02:05:47,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:05:47,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:05:47,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:47,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:05:47,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:05:47,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:47" (1/1) ... [2020-11-30 02:05:47,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4646de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:47, skipping insertion in model container [2020-11-30 02:05:47,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:47" (1/1) ... [2020-11-30 02:05:47,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:05:47,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:05:48,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:48,203 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:05:48,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:48,264 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:05:48,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48 WrapperNode [2020-11-30 02:05:48,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:48,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:48,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:05:48,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:05:48,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:48,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:05:48,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:05:48,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:05:48,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... [2020-11-30 02:05:48,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:05:48,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:05:48,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:05:48,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:05:48,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:05:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:05:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:05:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:05:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:05:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:05:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:05:49,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:05:49,487 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:05:49,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:49 BoogieIcfgContainer [2020-11-30 02:05:49,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:05:49,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:05:49,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:05:49,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:05:49,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:05:47" (1/3) ... [2020-11-30 02:05:49,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d482145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:49, skipping insertion in model container [2020-11-30 02:05:49,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:48" (2/3) ... [2020-11-30 02:05:49,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d482145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:49, skipping insertion in model container [2020-11-30 02:05:49,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:49" (3/3) ... [2020-11-30 02:05:49,501 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-30 02:05:49,515 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:05:49,520 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:05:49,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:05:49,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:05:49,564 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:05:49,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:05:49,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:05:49,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:05:49,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:05:49,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:05:49,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:05:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 02:05:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:05:49,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:49,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:49,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:49,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:49,593 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-30 02:05:49,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:49,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575832090] [2020-11-30 02:05:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:49,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575832090] [2020-11-30 02:05:49,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:49,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:05:49,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180979694] [2020-11-30 02:05:49,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:05:49,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:05:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:05:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:05:49,896 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 02:05:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:49,932 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-30 02:05:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:05:49,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 02:05:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:49,956 INFO L225 Difference]: With dead ends: 35 [2020-11-30 02:05:49,957 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:05:49,961 INFO L677 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 [2020-11-30 02:05:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:05:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:05:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:05:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 02:05:50,006 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-30 02:05:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:50,006 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 02:05:50,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:05:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 02:05:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:05:50,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:50,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:50,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:05:50,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-30 02:05:50,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:05:50,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200604200] [2020-11-30 02:05:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:05:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:05:50,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:05:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:05:50,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:05:50,231 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:05:50,231 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:05:50,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:05:50,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:05:50 BoogieIcfgContainer [2020-11-30 02:05:50,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:05:50,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:05:50,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:05:50,284 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:05:50,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:49" (3/4) ... [2020-11-30 02:05:50,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:05:50,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:05:50,295 INFO L168 Benchmark]: Toolchain (without parser) took 2428.34 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 50.0 MB in the beginning and 79.2 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:50,298 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 51.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:50,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.12 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 62.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:50,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:50,304 INFO L168 Benchmark]: Boogie Preprocessor took 65.10 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 59.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:50,306 INFO L168 Benchmark]: RCFGBuilder took 1081.58 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 59.0 MB in the beginning and 71.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:05:50,308 INFO L168 Benchmark]: TraceAbstraction took 789.91 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 79.2 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:50,309 INFO L168 Benchmark]: Witness Printer took 7.38 ms. Allocated memory is still 113.2 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:05:50,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 51.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.12 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 62.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.10 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 59.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1081.58 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 59.0 MB in the beginning and 71.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 789.91 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 79.2 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.38 ms. Allocated memory is still 113.2 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-30 02:05:53,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:05:53,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:05:53,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:05:53,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:05:53,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:05:53,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:05:53,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:05:53,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:05:53,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:05:53,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:05:53,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:05:53,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:05:53,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:05:53,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:05:53,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:05:53,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:05:53,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:05:53,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:05:53,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:05:53,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:05:53,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:05:53,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:05:53,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:05:53,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:05:53,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:05:53,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:05:53,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:05:53,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:05:53,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:05:53,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:05:53,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:05:53,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:05:53,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:05:53,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:05:53,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:05:53,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:05:53,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:05:53,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:05:53,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:05:53,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:05:53,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:05:53,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:05:53,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:05:53,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:05:53,582 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:05:53,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:05:53,583 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:05:53,590 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:05:53,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:05:53,591 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:05:53,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:05:53,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:05:53,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:05:53,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:05:53,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:05:53,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:05:53,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:05:53,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:05:53,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:05:53,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:05:53,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:05:53,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:05:53,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:05:53,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:05:53,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:05:53,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:05:53,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:05:53,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:05:53,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:05:53,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:05:53,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:05:53,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:05:53,600 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:05:53,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:05:53,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:05:53,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:05:53,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:05:53,601 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-30 02:05:54,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:05:54,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:05:54,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:05:54,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:05:54,113 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:05:54,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-30 02:05:54,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/c0ae63215/830d1947be43433cb7d062f5cef7b2fc/FLAG9439cd9a7 [2020-11-30 02:05:54,899 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:05:54,900 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-30 02:05:54,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/c0ae63215/830d1947be43433cb7d062f5cef7b2fc/FLAG9439cd9a7 [2020-11-30 02:05:55,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/data/c0ae63215/830d1947be43433cb7d062f5cef7b2fc [2020-11-30 02:05:55,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:05:55,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:05:55,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:55,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:05:55,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:05:55,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8db7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55, skipping insertion in model container [2020-11-30 02:05:55,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:05:55,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:05:55,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:55,550 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:05:55,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:05:55,641 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:05:55,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55 WrapperNode [2020-11-30 02:05:55,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:05:55,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:55,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:05:55,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:05:55,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:05:55,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:05:55,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:05:55,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:05:55,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... [2020-11-30 02:05:55,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:05:55,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:05:55,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:05:55,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:05:55,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:05:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:05:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:05:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:05:56,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:05:56,796 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:05:56,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:56 BoogieIcfgContainer [2020-11-30 02:05:56,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:05:56,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:05:56,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:05:56,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:05:56,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:05:55" (1/3) ... [2020-11-30 02:05:56,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c301bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:56, skipping insertion in model container [2020-11-30 02:05:56,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:05:55" (2/3) ... [2020-11-30 02:05:56,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c301bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:05:56, skipping insertion in model container [2020-11-30 02:05:56,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:56" (3/3) ... [2020-11-30 02:05:56,807 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-30 02:05:56,821 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:05:56,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:05:56,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:05:56,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:05:56,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:05:56,870 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:05:56,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:05:56,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:05:56,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:05:56,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:05:56,871 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:05:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 02:05:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:05:56,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:56,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:56,894 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 02:05:56,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:56,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671171271] [2020-11-30 02:05:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:57,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:05:57,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:57,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:57,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671171271] [2020-11-30 02:05:57,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:57,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:05:57,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368675955] [2020-11-30 02:05:57,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:05:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:57,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:05:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:05:57,113 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 02:05:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:57,135 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 02:05:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:05:57,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:05:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:57,148 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:05:57,149 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 02:05:57,153 INFO L677 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 [2020-11-30 02:05:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 02:05:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 02:05:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 02:05:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 02:05:57,202 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 02:05:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:57,202 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 02:05:57,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:05:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 02:05:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:05:57,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:57,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:57,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:05:57,420 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 02:05:57,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848317474] [2020-11-30 02:05:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:57,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:05:57,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:57,695 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-11-30 02:05:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:57,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:57,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848317474] [2020-11-30 02:05:57,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:57,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:05:57,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634784015] [2020-11-30 02:05:57,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:05:57,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:05:57,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:57,802 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 02:05:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:57,975 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 02:05:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:05:57,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:05:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:57,977 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:05:57,978 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 02:05:57,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:05:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 02:05:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 02:05:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:05:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 02:05:57,988 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 02:05:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:57,989 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 02:05:57,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:05:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 02:05:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:05:57,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:57,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:58,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:05:58,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 02:05:58,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:58,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417909708] [2020-11-30 02:05:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:58,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:05:58,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:58,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:58,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417909708] [2020-11-30 02:05:58,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:58,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 02:05:58,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453568877] [2020-11-30 02:05:58,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:05:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:05:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:05:58,443 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 02:05:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:58,546 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 02:05:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:05:58,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 02:05:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:58,549 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:05:58,550 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 02:05:58,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:05:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 02:05:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 02:05:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 02:05:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-30 02:05:58,564 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-30 02:05:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:58,565 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-30 02:05:58,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:05:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-30 02:05:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:05:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:58,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:58,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:05:58,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 02:05:58,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:58,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951737561] [2020-11-30 02:05:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:58,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:05:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:58,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951737561] [2020-11-30 02:05:59,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:05:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775526975] [2020-11-30 02:05:59,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:05:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:05:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:05:59,006 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-30 02:05:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:59,117 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-30 02:05:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:05:59,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:05:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:59,119 INFO L225 Difference]: With dead ends: 61 [2020-11-30 02:05:59,120 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 02:05:59,120 INFO L677 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 [2020-11-30 02:05:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 02:05:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-30 02:05:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:05:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-30 02:05:59,135 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-30 02:05:59,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:59,135 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-30 02:05:59,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:05:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 02:05:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:05:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:59,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:59,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:05:59,337 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 02:05:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:59,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320798473] [2020-11-30 02:05:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:59,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:05:59,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:59,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:05:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:59,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320798473] [2020-11-30 02:05:59,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:05:59,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:05:59,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406230907] [2020-11-30 02:05:59,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:05:59,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:05:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:05:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:05:59,568 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-30 02:05:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:05:59,586 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 02:05:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:05:59,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 02:05:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:05:59,591 INFO L225 Difference]: With dead ends: 38 [2020-11-30 02:05:59,591 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 02:05:59,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:05:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 02:05:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 02:05:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:05:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-30 02:05:59,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-30 02:05:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:05:59,597 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-30 02:05:59,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:05:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-30 02:05:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:05:59,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:05:59,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:05:59,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:05:59,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:05:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:05:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 02:05:59,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:05:59,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959338797] [2020-11-30 02:05:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/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 [2020-11-30 02:05:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:05:59,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:05:59,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:05:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:05:59,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:00,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959338797] [2020-11-30 02:06:00,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:00,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 02:06:00,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967502821] [2020-11-30 02:06:00,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:06:00,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:06:00,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:06:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:06:00,060 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-30 02:06:00,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:00,221 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-30 02:06:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:06:00,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 02:06:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:00,222 INFO L225 Difference]: With dead ends: 40 [2020-11-30 02:06:00,223 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 02:06:00,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:06:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 02:06:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-30 02:06:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 02:06:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-30 02:06:00,235 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-30 02:06:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:00,235 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-30 02:06:00,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:06:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-30 02:06:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:06:00,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:00,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:00,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:06:00,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 02:06:00,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:06:00,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266143123] [2020-11-30 02:06:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:06:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:06:00,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:00,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266143123] [2020-11-30 02:06:00,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:00,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:06:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110243908] [2020-11-30 02:06:00,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:06:00,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:06:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:06:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:06:00,649 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-30 02:06:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:00,712 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-30 02:06:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:06:00,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-30 02:06:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:00,716 INFO L225 Difference]: With dead ends: 43 [2020-11-30 02:06:00,716 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:06:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:06:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:06:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:06:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:06:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-30 02:06:00,721 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-30 02:06:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:00,721 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-30 02:06:00,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:06:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-30 02:06:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:06:00,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:00,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:00,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:06:00,940 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 02:06:00,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:06:00,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323908930] [2020-11-30 02:06:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:06:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:01,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:06:01,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:01,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:06:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:01,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:01,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323908930] [2020-11-30 02:06:01,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:01,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-11-30 02:06:01,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195701870] [2020-11-30 02:06:01,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 02:06:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:06:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 02:06:01,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:06:01,603 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2020-11-30 02:06:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:01,986 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-30 02:06:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:06:01,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-30 02:06:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:01,987 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:06:01,987 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:06:01,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:06:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:06:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:06:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:06:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:06:01,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-30 02:06:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:01,989 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:06:01,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 02:06:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:06:01,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:06:02,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:06:02,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-30 02:06:02,538 INFO L274 CegarLoopResult]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2020-11-30 02:06:02,539 INFO L270 CegarLoopResult]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))))) [2020-11-30 02:06:02,539 INFO L274 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-11-30 02:06:02,539 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-11-30 02:06:02,539 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-30 02:06:02,539 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:06:02,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:06:02,541 INFO L274 CegarLoopResult]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-30 02:06:02,542 INFO L274 CegarLoopResult]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L274 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-11-30 02:06:02,542 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-30 02:06:02,543 INFO L274 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-11-30 02:06:02,543 INFO L274 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-11-30 02:06:02,543 INFO L270 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-30 02:06:02,543 INFO L274 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-11-30 02:06:02,543 INFO L270 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-30 02:06:02,543 INFO L270 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-30 02:06:02,543 INFO L277 CegarLoopResult]: At program point L76(lines 58 77) the Hoare annotation is: true [2020-11-30 02:06:02,544 INFO L274 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-30 02:06:02,544 INFO L274 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-11-30 02:06:02,544 INFO L270 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-30 02:06:02,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:06:02 BoogieIcfgContainer [2020-11-30 02:06:02,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:06:02,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:06:02,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:06:02,591 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:06:02,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:05:56" (3/4) ... [2020-11-30 02:06:02,595 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:06:02,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 02:06:02,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 02:06:02,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:06:02,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:06:02,647 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x [2020-11-30 02:06:02,647 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-30 02:06:02,649 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-30 02:06:02,649 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-30 02:06:02,651 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2020-11-30 02:06:02,705 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c709c49-acb6-4788-b892-beae0474b637/bin/utaipan/witness.graphml [2020-11-30 02:06:02,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:06:02,708 INFO L168 Benchmark]: Toolchain (without parser) took 7463.58 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 30.7 MB in the beginning and 32.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,708 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:02,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.31 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 33.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.23 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.3 MB in the beginning and 46.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,710 INFO L168 Benchmark]: Boogie Preprocessor took 96.61 ms. Allocated memory is still 62.9 MB. Free memory was 46.9 MB in the beginning and 45.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,711 INFO L168 Benchmark]: RCFGBuilder took 959.22 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 40.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,711 INFO L168 Benchmark]: TraceAbstraction took 5789.75 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 36.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,712 INFO L168 Benchmark]: Witness Printer took 115.71 ms. Allocated memory is still 83.9 MB. Free memory was 36.9 MB in the beginning and 32.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:02,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.31 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 33.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.23 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.3 MB in the beginning and 46.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.61 ms. Allocated memory is still 62.9 MB. Free memory was 46.9 MB in the beginning and 45.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 959.22 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 40.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5789.75 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 36.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 115.71 ms. Allocated memory is still 83.9 MB. Free memory was 36.9 MB in the beginning and 32.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 204 SDslu, 399 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...