./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 aff65fabc2d382d12545e3467825c9efd3fdd157 .............................................................................................................................................................................................................................................. 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_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 aff65fabc2d382d12545e3467825c9efd3fdd157 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:51:01,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:51:01,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:51:01,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:51:01,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:51:01,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:51:01,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:51:01,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:51:01,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:51:01,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:51:01,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:51:01,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:51:01,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:51:01,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:51:01,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:51:01,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:51:01,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:51:01,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:51:01,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:51:01,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:51:01,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:51:01,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:51:01,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:51:01,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:51:01,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:51:01,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:51:01,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:51:01,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:51:01,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:51:01,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:51:01,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:51:01,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:51:01,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:51:01,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:51:01,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:51:01,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:51:01,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:51:01,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:51:01,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:51:01,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:51:01,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:51:01,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:51:01,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:51:01,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:51:01,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:51:01,519 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:51:01,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:51:01,520 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:51:01,520 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:51:01,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:51:01,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:51:01,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:51:01,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:51:01,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:51:01,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:51:01,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:51:01,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:51:01,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:51:01,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:51:01,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:51:01,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:51:01,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:51:01,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:51:01,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:51:01,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:51:01,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:51:01,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:51:01,524 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_02526495-d5a6-4289-8f03-a2f8c3deacbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-12-09 09:51:01,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:51:01,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:51:01,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:51:01,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:51:01,735 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:51:01,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-09 09:51:01,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/fd9157606/a88191e17efa4802917ff41ccca3aee1/FLAGb699d8c33 [2020-12-09 09:51:02,142 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:51:02,142 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-09 09:51:02,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/fd9157606/a88191e17efa4802917ff41ccca3aee1/FLAGb699d8c33 [2020-12-09 09:51:02,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/fd9157606/a88191e17efa4802917ff41ccca3aee1 [2020-12-09 09:51:02,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:51:02,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:51:02,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:51:02,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:51:02,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:51:02,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6e67c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02, skipping insertion in model container [2020-12-09 09:51:02,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:51:02,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:51:02,274 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2020-12-09 09:51:02,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:51:02,293 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:51:02,303 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2020-12-09 09:51:02,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:51:02,315 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:51:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02 WrapperNode [2020-12-09 09:51:02,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:51:02,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:51:02,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:51:02,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:51:02,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:51:02,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:51:02,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:51:02,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:51:02,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... [2020-12-09 09:51:02,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:51:02,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:51:02,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:51:02,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:51:02,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:51:02,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:51:02,578 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 09:51:02,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:02 BoogieIcfgContainer [2020-12-09 09:51:02,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:51:02,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:51:02,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:51:02,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:51:02,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:51:02" (1/3) ... [2020-12-09 09:51:02,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e2acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:51:02, skipping insertion in model container [2020-12-09 09:51:02,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:02" (2/3) ... [2020-12-09 09:51:02,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e2acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:51:02, skipping insertion in model container [2020-12-09 09:51:02,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:02" (3/3) ... [2020-12-09 09:51:02,586 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-12-09 09:51:02,596 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:51:02,599 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:51:02,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:51:02,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:51:02,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:51:02,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:51:02,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:51:02,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:51:02,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:51:02,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:51:02,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:51:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-09 09:51:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 09:51:02,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:51:02,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 09:51:02,649 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:51:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:51:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1850503, now seen corresponding path program 1 times [2020-12-09 09:51:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:51:02,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350881514] [2020-12-09 09:51:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:51:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:51:02,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:51:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:51:02,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:51:02,777 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:51:02,778 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:51:02,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:51:02,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:51:02 BoogieIcfgContainer [2020-12-09 09:51:02,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:51:02,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:51:02,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:51:02,792 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:51:02,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:02" (3/4) ... [2020-12-09 09:51:02,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:51:02,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:51:02,798 INFO L168 Benchmark]: Toolchain (without parser) took 638.54 ms. Allocated memory is still 90.2 MB. Free memory was 60.0 MB in the beginning and 44.1 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:51:02,799 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:51:02,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.85 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 50.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:51:02,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.05 ms. Allocated memory is still 90.2 MB. Free memory was 50.4 MB in the beginning and 49.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:51:02,802 INFO L168 Benchmark]: Boogie Preprocessor took 14.00 ms. Allocated memory is still 90.2 MB. Free memory was 49.0 MB in the beginning and 48.0 MB in the end (delta: 982.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:51:02,803 INFO L168 Benchmark]: RCFGBuilder took 223.01 ms. Allocated memory is still 90.2 MB. Free memory was 68.9 MB in the beginning and 56.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:51:02,804 INFO L168 Benchmark]: TraceAbstraction took 210.00 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 44.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:51:02,804 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 90.2 MB. Free memory was 44.4 MB in the beginning and 44.1 MB in the end (delta: 234.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:51:02,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 155.85 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 50.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.05 ms. Allocated memory is still 90.2 MB. Free memory was 50.4 MB in the beginning and 49.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.00 ms. Allocated memory is still 90.2 MB. Free memory was 49.0 MB in the beginning and 48.0 MB in the end (delta: 982.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 223.01 ms. Allocated memory is still 90.2 MB. Free memory was 68.9 MB in the beginning and 56.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 210.00 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 44.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.34 ms. Allocated memory is still 90.2 MB. Free memory was 44.4 MB in the beginning and 44.1 MB in the end (delta: 234.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.2.0-7b2dab5 [2020-12-09 09:51:04,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:51:04,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:51:04,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:51:04,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:51:04,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:51:04,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:51:04,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:51:04,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:51:04,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:51:04,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:51:04,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:51:04,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:51:04,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:51:04,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:51:04,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:51:04,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:51:04,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:51:04,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:51:04,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:51:04,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:51:04,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:51:04,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:51:04,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:51:04,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:51:04,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:51:04,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:51:04,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:51:04,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:51:04,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:51:04,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:51:04,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:51:04,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:51:04,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:51:04,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:51:04,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:51:04,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:51:04,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:51:04,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:51:04,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:51:04,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:51:04,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 09:51:04,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:51:04,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:51:04,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:51:04,474 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:51:04,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:51:04,474 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:51:04,475 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:51:04,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:51:04,475 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:51:04,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:51:04,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:51:04,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:51:04,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:51:04,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:51:04,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:51:04,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:51:04,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:51:04,479 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_02526495-d5a6-4289-8f03-a2f8c3deacbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-12-09 09:51:04,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:51:04,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:51:04,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:51:04,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:51:04,713 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:51:04,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-09 09:51:04,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/f53195ba9/a56891e1310d4332b21ad585e63f59c3/FLAG17ac2533c [2020-12-09 09:51:05,172 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:51:05,173 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-09 09:51:05,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/f53195ba9/a56891e1310d4332b21ad585e63f59c3/FLAG17ac2533c [2020-12-09 09:51:05,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/data/f53195ba9/a56891e1310d4332b21ad585e63f59c3 [2020-12-09 09:51:05,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:51:05,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:51:05,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:51:05,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:51:05,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:51:05,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fff5ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05, skipping insertion in model container [2020-12-09 09:51:05,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:51:05,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:51:05,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2020-12-09 09:51:05,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:51:05,324 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:51:05,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2020-12-09 09:51:05,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:51:05,361 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:51:05,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05 WrapperNode [2020-12-09 09:51:05,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:51:05,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:51:05,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:51:05,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:51:05,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:51:05,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:51:05,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:51:05,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:51:05,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... [2020-12-09 09:51:05,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:51:05,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:51:05,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:51:05,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:51:05,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:51:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 09:51:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:51:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:51:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:51:06,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:51:06,502 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 09:51:06,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:06 BoogieIcfgContainer [2020-12-09 09:51:06,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:51:06,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:51:06,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:51:06,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:51:06,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:51:05" (1/3) ... [2020-12-09 09:51:06,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c3fda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:51:06, skipping insertion in model container [2020-12-09 09:51:06,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:51:05" (2/3) ... [2020-12-09 09:51:06,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c3fda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:51:06, skipping insertion in model container [2020-12-09 09:51:06,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:06" (3/3) ... [2020-12-09 09:51:06,508 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-12-09 09:51:06,517 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:51:06,519 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:51:06,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:51:06,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:51:06,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:51:06,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:51:06,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:51:06,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:51:06,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:51:06,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:51:06,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:51:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 09:51:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 09:51:06,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:51:06,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 09:51:06,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:51:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:51:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-09 09:51:06,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:51:06,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481174753] [2020-12-09 09:51:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:51:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:51:06,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:51:06,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:51:07,216 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 09:51:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:07,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:51:07,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481174753] [2020-12-09 09:51:07,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:51:07,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:51:07,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818558629] [2020-12-09 09:51:07,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:51:07,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:51:07,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:51:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:51:07,238 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 09:51:08,389 WARN L197 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:51:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:51:08,719 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-09 09:51:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:51:08,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 09:51:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:51:08,800 INFO L225 Difference]: With dead ends: 20 [2020-12-09 09:51:08,800 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 09:51:08,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:51:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 09:51:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 09:51:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 09:51:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 09:51:08,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 09:51:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:51:08,822 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 09:51:08,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:51:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 09:51:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:51:08,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:51:08,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:51:09,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:51:09,025 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:51:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:51:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-09 09:51:09,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:51:09,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152274036] [2020-12-09 09:51:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:51:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:51:09,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:51:09,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:51:12,060 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 09:51:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:12,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:51:23,489 WARN L197 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 7 [2020-12-09 09:51:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:23,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152274036] [2020-12-09 09:51:23,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1556416538] [2020-12-09 09:51:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt [2020-12-09 09:51:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:51:23,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 09:51:23,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:51:27,343 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:51:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:27,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:51:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:27,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296463645] [2020-12-09 09:51:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:51:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:51:33,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:51:33,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:51:34,888 WARN L197 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-12-09 09:51:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:51:34,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:51:44,176 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0))) is different from true [2020-12-09 09:51:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-12-09 09:51:44,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 09:51:44,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 6] total 14 [2020-12-09 09:51:44,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357891919] [2020-12-09 09:51:44,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 09:51:44,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:51:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 09:51:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=110, Unknown=7, NotChecked=22, Total=182 [2020-12-09 09:51:44,260 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 14 states. [2020-12-09 09:51:49,998 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2020-12-09 09:52:03,861 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:52:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:52:20,723 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-09 09:52:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:52:20,739 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 7 [2020-12-09 09:52:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:52:20,739 INFO L225 Difference]: With dead ends: 15 [2020-12-09 09:52:20,739 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 09:52:20,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=67, Invalid=170, Unknown=7, NotChecked=28, Total=272 [2020-12-09 09:52:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 09:52:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 09:52:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 09:52:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 09:52:20,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-12-09 09:52:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:52:20,743 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 09:52:20,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 09:52:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 09:52:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:52:20,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:52:20,744 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-12-09 09:52:21,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:52:21,347 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:52:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:52:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2020-12-09 09:52:21,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:52:21,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911878840] [2020-12-09 09:52:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:52:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:52:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:52:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:52:21,984 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 09:52:27,597 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:52:29,646 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-12-09 09:52:30,522 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 09:52:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2020-12-09 09:52:30,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:52:34,105 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-12-09 09:52:36,146 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:52:38,185 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:52:40,245 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:52:42,299 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:52:44,381 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:52:46,450 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:52:48,516 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:52:50,579 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:52:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-12-09 09:52:50,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911878840] [2020-12-09 09:52:50,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002326747] [2020-12-09 09:52:50,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 09:52:51,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 09:52:51,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:52:51,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 09:52:51,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:52:53,513 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~x~0))) is different from true [2020-12-09 09:52:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2020-12-09 09:52:53,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:53:18,265 WARN L197 SmtUtils]: Spent 6.48 s on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 09:53:20,304 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-12-09 09:53:22,343 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-12-09 09:53:24,403 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-12-09 09:53:26,461 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-12-09 09:53:28,540 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-12-09 09:53:30,616 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-12-09 09:53:32,685 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-12-09 09:53:34,750 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-12-09 09:53:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 9 not checked. [2020-12-09 09:53:34,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456667870] [2020-12-09 09:53:34,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:53:47,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 09:53:47,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:53:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 09:53:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:53:59,193 WARN L197 SmtUtils]: Spent 4.27 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 09:54:35,335 WARN L197 SmtUtils]: Spent 17.02 s on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2020-12-09 09:54:39,296 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1)) (= (fp.div c_currentRoundingMode .cse0 .cse1) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-09 09:54:41,361 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) c_ULTIMATE.start_main_~x~0) (= (fp.div c_currentRoundingMode .cse0 .cse1) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-12-09 09:54:43,405 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1) c_ULTIMATE.start_main_~x~0) (= (fp.div c_currentRoundingMode .cse0 .cse1) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-09 09:54:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2020-12-09 09:54:43,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:55:12,010 WARN L197 SmtUtils]: Spent 11.00 s on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:55:14,055 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-12-09 09:55:16,092 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-12-09 09:55:18,155 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse2 c_ULTIMATE.start_main_~x1~0))))) is different from false [2020-12-09 09:55:20,212 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse2 c_ULTIMATE.start_main_~x1~0))))) is different from true [2020-12-09 09:55:22,294 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (or (fp.eq .cse0 .cse1) (fp.eq .cse1 .cse2) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))))) is different from false [2020-12-09 09:55:24,376 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (or (fp.eq .cse0 .cse1) (fp.eq .cse1 .cse2) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))))) is different from true [2020-12-09 09:55:26,444 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse1 .cse2) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0)) (fp.eq .cse0 .cse1)))))) is different from false [2020-12-09 09:55:28,505 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse3))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse3))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse1 .cse2) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0)) (fp.eq .cse0 .cse1)))))) is different from true [2020-12-09 09:55:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 9 not checked. [2020-12-09 09:55:28,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 09:55:28,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 9, 8, 9] total 31 [2020-12-09 09:55:28,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817969257] [2020-12-09 09:55:28,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-09 09:55:28,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:55:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-09 09:55:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=147, Unknown=44, NotChecked=714, Total=992 [2020-12-09 09:55:28,508 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 32 states. [2020-12-09 09:55:32,010 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse5) .cse5))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse5))) (let ((.cse4 (fp.div c_currentRoundingMode .cse1 .cse5))) (let ((.cse0 (fp.eq .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse3 (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)))) (and (or .cse0 (fp.eq .cse1 .cse2) .cse3 (fp.eq .cse4 .cse1)) (or .cse0 .cse3) .cse3 (= c_currentRoundingMode roundNearestTiesToEven))))))) is different from true [2020-12-09 09:55:34,092 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse0))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse0) .cse2))) (.cse5 (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) .cse1 (or (fp.eq .cse2 .cse3) (fp.eq .cse3 .cse4) .cse1 .cse5) (or .cse1 .cse5))))))) is different from false [2020-12-09 09:55:36,171 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 .cse0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse0))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse0) .cse2))) (.cse5 (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) .cse1 (or (fp.eq .cse2 .cse3) (fp.eq .cse3 .cse4) .cse1 .cse5) (or .cse1 .cse5))))))) is different from true [2020-12-09 09:55:38,231 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse4))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse4))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse4) .cse1))) (.cse3 (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and .cse0 (= c_currentRoundingMode roundNearestTiesToEven) (or .cse0 (fp.eq .cse1 .cse2) .cse3 (fp.eq .cse2 c_ULTIMATE.start_main_~x1~0)) (or .cse0 .cse3) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4))))))) is different from false [2020-12-09 09:55:40,292 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse4))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse4))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse4) .cse1))) (.cse3 (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and .cse0 (= c_currentRoundingMode roundNearestTiesToEven) (or .cse0 (fp.eq .cse1 .cse2) .cse3 (fp.eq .cse2 c_ULTIMATE.start_main_~x1~0)) (or .cse0 .cse3) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4))))))) is different from true [2020-12-09 09:55:42,340 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse3))) (let ((.cse2 (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0)))) (and (or (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0) (fp.eq .cse0 c_ULTIMATE.start_main_~x1~0) .cse1 .cse2) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse3)) .cse1 (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3)))))) is different from true [2020-12-09 09:55:44,536 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) c_ULTIMATE.start_main_~x1~0))) (.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (and (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) .cse0) .cse0 (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1)) (= (fp.div c_currentRoundingMode .cse2 .cse1) c_ULTIMATE.start_main_~x1~0) (= c_ULTIMATE.start_main_~x~0 .cse2)))) is different from true [2020-12-09 09:55:47,717 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) (.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse2) .cse2) .cse2))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 .cse0)) (= c_ULTIMATE.start_main_~x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse2)) (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x~0 .cse1) c_ULTIMATE.start_main_~x1~0) (= (fp.div c_currentRoundingMode .cse0 .cse2) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-09 09:56:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:56:05,362 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 09:56:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:56:05,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 10 [2020-12-09 09:56:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:56:05,383 INFO L225 Difference]: With dead ends: 16 [2020-12-09 09:56:05,383 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 09:56:05,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 190.4s TimeCoverageRelationStatistics Valid=99, Invalid=151, Unknown=52, NotChecked=1104, Total=1406 [2020-12-09 09:56:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 09:56:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 09:56:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 09:56:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 09:56:05,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-12-09 09:56:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:56:05,387 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 09:56:05,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-09 09:56:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 09:56:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:56:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:56:05,388 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2020-12-09 09:56:05,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:56:05,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:56:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:56:05,992 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2020-12-09 09:56:05,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:56:05,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727001706] [2020-12-09 09:56:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/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 [2020-12-09 09:56:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:06,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 09:56:06,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:56:06,764 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 09:56:14,013 WARN L197 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:56:16,065 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-12-09 09:56:18,134 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2020-12-09 09:56:20,568 WARN L197 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 09:56:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2020-12-09 09:56:20,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:56:23,221 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-12-09 09:56:25,267 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:56:27,311 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:56:29,375 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:56:31,437 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:56:33,524 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:56:35,604 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:56:37,710 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:56:39,810 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:56:41,897 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-12-09 09:56:43,983 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-12-09 09:56:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2020-12-09 09:56:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727001706] [2020-12-09 09:56:43,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [311724090] [2020-12-09 09:56:43,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 09:56:44,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 09:56:44,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:56:44,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:56:44,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:56:56,375 WARN L197 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 10 [2020-12-09 09:56:58,421 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_37)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_37 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) is different from false [2020-12-09 09:57:01,510 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (and (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_37)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_37 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-12-09 09:57:02,563 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:57:12,793 WARN L838 $PredicateComparison]: unable to prove that (or (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_37 .cse1))) (and (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_37)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (and (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_37 .cse3))) (and (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_37)) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2020-12-09 09:57:18,935 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_37 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_37)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2020-12-09 09:57:20,964 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_37 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_37 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_37)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2020-12-09 09:57:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 5 not checked. [2020-12-09 09:57:20,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:28,755 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) is different from true [2020-12-09 09:57:30,789 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_39 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_39 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_39) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-12-09 09:57:32,830 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_39 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_39 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_39) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-12-09 09:57:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 9 not checked. [2020-12-09 09:57:32,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782844094] [2020-12-09 09:57:32,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:57:41,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 09:57:41,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:57:41,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:57:41,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:19,431 WARN L197 SmtUtils]: Spent 13.53 s on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 09:58:21,474 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_44 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) (and (= c_ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_44))))) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-12-09 09:58:22,323 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:58:32,535 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_44 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_44)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_44 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_44)) (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))))))) is different from false [2020-12-09 09:58:38,669 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_44 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_44)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2020-12-09 09:58:40,701 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_44 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_44)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2020-12-09 09:58:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 09:58:40,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:58:40,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2020-12-09 09:58:40,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 6, 6] total 29 [2020-12-09 09:58:40,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643959335] [2020-12-09 09:58:40,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 09:58:40,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:58:40,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 09:58:40,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=125, Unknown=32, NotChecked=646, Total=870 [2020-12-09 09:58:40,703 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-12-09 09:58:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:58:49,254 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-09 09:58:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:58:49,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-09 09:58:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:58:49,293 INFO L225 Difference]: With dead ends: 12 [2020-12-09 09:58:49,293 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:58:49,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 119.7s TimeCoverageRelationStatistics Valid=67, Invalid=125, Unknown=32, NotChecked=646, Total=870 [2020-12-09 09:58:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:58:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:58:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:58:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:58:49,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 09:58:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:58:49,294 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:58:49,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 09:58:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:58:49,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:58:49,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:58:49,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:59:04,129 WARN L197 SmtUtils]: Spent 14.17 s on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 09:59:04,137 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:59:04,137 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_ULTIMATE.start_main_~x~0_44 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_44 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) (and (= ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_44))))) (= ULTIMATE.start_main_~x1~0 (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) [2020-12-09 09:59:04,137 INFO L262 CegarLoopResult]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L258 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L258 CegarLoopResult]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 09:59:04,138 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 09:59:04,144 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,147 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,149 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,150 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,152 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,152 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:59:04 BoogieIcfgContainer [2020-12-09 09:59:04,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:59:04,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:59:04,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:59:04,154 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:59:04,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:51:06" (3/4) ... [2020-12-09 09:59:04,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:59:04,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 09:59:04,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 09:59:04,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:59:04,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:59:04,180 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_ULTIMATE.start_main_~x~0_44 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_44, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_44, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_44))) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) [2020-12-09 09:59:04,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_02526495-d5a6-4289-8f03-a2f8c3deacbc/bin/utaipan/witness.graphml [2020-12-09 09:59:04,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:59:04,185 INFO L168 Benchmark]: Toolchain (without parser) took 478989.49 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.2 MB in the beginning and 25.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:59:04,186 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:59:04,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.55 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 44.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:59:04,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:59:04,187 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:59:04,187 INFO L168 Benchmark]: RCFGBuilder took 1093.51 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 31.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:59:04,187 INFO L168 Benchmark]: TraceAbstraction took 477649.87 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:59:04,188 INFO L168 Benchmark]: Witness Printer took 30.92 ms. Allocated memory is still 73.4 MB. Free memory was 27.1 MB in the beginning and 25.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:59:04,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.55 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 44.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.30 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1093.51 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 31.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 477649.87 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 30.92 ms. Allocated memory is still 73.4 MB. Free memory was 27.1 MB in the beginning and 25.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2020-12-09 09:59:04,193 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2020-12-09 09:59:04,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_44,QUANTIFIED] Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_ULTIMATE.start_main_~x~0_44 : C_FLOAT :: x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_44, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_44, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_44))) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:59:04,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 463.3s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 83.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 19 SDslu, 38 SDs, 0 SdLazy, 71 SolverSat, 12 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 49.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 41 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 355.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 828 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 14.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 30.2s SatisfiabilityAnalysisTime, 347.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 145 ConstructedInterpolants, 14 QuantifiedInterpolants, 23194 SizeOfPredicates, 52 NumberOfNonLiveVariables, 334 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 31/141 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...