./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --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_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 51c288f40d68a666851060907ab6bc13e9c502d2 ........................................................................................................................................................................................................................................................................................................... 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_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 51c288f40d68a666851060907ab6bc13e9c502d2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:06:02,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:06:02,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:06:02,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:06:02,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:06:02,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:06:02,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:06:02,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:06:02,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:06:02,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:06:02,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:06:02,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:06:02,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:06:02,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:06:02,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:06:02,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:06:02,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:06:02,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:06:02,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:06:02,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:06:02,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:06:02,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:06:02,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:06:02,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:06:02,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:06:02,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:06:02,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:06:02,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:06:02,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:06:02,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:06:02,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:06:02,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:06:02,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:06:02,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:06:02,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:06:02,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:06:02,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:06:02,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:06:02,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:06:02,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:06:02,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:06:02,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:06:02,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:06:02,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:06:02,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:06:02,423 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:06:02,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:06:02,423 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:06:02,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:06:02,423 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:06:02,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:06:02,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:06:02,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:06:02,424 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:06:02,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:06:02,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:06:02,424 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:06:02,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:06:02,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:06:02,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:06:02,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:06:02,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:06:02,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:06:02,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:06:02,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:06:02,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:06:02,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:06:02,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:06:02,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:06:02,427 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:06:02,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:06:02,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:06:02,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:06:02,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:06:02,428 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_291f66af-76b9-4028-9d84-bed492fa0ba3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-12-09 12:06:02,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:06:02,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:06:02,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:06:02,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:06:02,650 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:06:02,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-09 12:06:02,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/a4e2bdd05/5e36049dbbeb415a8958d953a70856cc/FLAGa15f5ca35 [2020-12-09 12:06:03,035 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:06:03,035 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-09 12:06:03,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/a4e2bdd05/5e36049dbbeb415a8958d953a70856cc/FLAGa15f5ca35 [2020-12-09 12:06:03,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/a4e2bdd05/5e36049dbbeb415a8958d953a70856cc [2020-12-09 12:06:03,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:06:03,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:06:03,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:06:03,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:06:03,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:06:03,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ea7206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03, skipping insertion in model container [2020-12-09 12:06:03,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:06:03,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:06:03,600 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_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-09 12:06:03,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:06:03,609 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:06:03,624 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_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-09 12:06:03,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:06:03,642 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:06:03,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03 WrapperNode [2020-12-09 12:06:03,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:06:03,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:06:03,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:06:03,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:06:03,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:06:03,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:06:03,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:06:03,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:06:03,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... [2020-12-09 12:06:03,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:06:03,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:06:03,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:06:03,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:06:03,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:06:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:06:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 12:06:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:06:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:06:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 12:06:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:06:04,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:06:04,152 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 12:06:04,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:04 BoogieIcfgContainer [2020-12-09 12:06:04,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:06:04,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:06:04,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:06:04,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:06:04,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:06:03" (1/3) ... [2020-12-09 12:06:04,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:04, skipping insertion in model container [2020-12-09 12:06:04,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:03" (2/3) ... [2020-12-09 12:06:04,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:04, skipping insertion in model container [2020-12-09 12:06:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:04" (3/3) ... [2020-12-09 12:06:04,160 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-12-09 12:06:04,170 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:06:04,173 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:06:04,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:06:04,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:06:04,201 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:06:04,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:06:04,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:06:04,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:06:04,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:06:04,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:06:04,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:06:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 12:06:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 12:06:04,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:04,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:04,215 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash -820271334, now seen corresponding path program 1 times [2020-12-09 12:06:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:06:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975658937] [2020-12-09 12:06:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:06:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:04,335 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 12:06:04,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975658937] [2020-12-09 12:06:04,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:04,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:06:04,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103860675] [2020-12-09 12:06:04,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:06:04,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:06:04,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:06:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:06:04,350 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 12:06:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:04,361 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2020-12-09 12:06:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:06:04,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 12:06:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:04,367 INFO L225 Difference]: With dead ends: 30 [2020-12-09 12:06:04,367 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 12:06:04,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:06:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 12:06:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 12:06:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 12:06:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 12:06:04,390 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-12-09 12:06:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:04,390 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 12:06:04,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:06:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 12:06:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:06:04,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:04,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:04,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:06:04,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:04,392 INFO L82 PathProgramCache]: Analyzing trace with hash -412503788, now seen corresponding path program 1 times [2020-12-09 12:06:04,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:06:04,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530379450] [2020-12-09 12:06:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:06:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:06:04,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:06:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:06:04,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:06:04,469 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:06:04,469 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:06:04,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:06:04,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:06:04 BoogieIcfgContainer [2020-12-09 12:06:04,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:06:04,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:06:04,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:06:04,487 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:06:04,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:04" (3/4) ... [2020-12-09 12:06:04,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:06:04,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:06:04,491 INFO L168 Benchmark]: Toolchain (without parser) took 1021.23 ms. Allocated memory is still 113.2 MB. Free memory was 72.8 MB in the beginning and 72.5 MB in the end (delta: 221.3 kB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:04,491 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 88.9 MB in the end (delta: 157.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:04,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.76 ms. Allocated memory is still 113.2 MB. Free memory was 72.4 MB in the beginning and 91.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:04,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:04,493 INFO L168 Benchmark]: Boogie Preprocessor took 18.09 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 88.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:04,493 INFO L168 Benchmark]: RCFGBuilder took 458.42 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 61.0 MB in the end (delta: 27.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:04,494 INFO L168 Benchmark]: TraceAbstraction took 331.54 ms. Allocated memory is still 113.2 MB. Free memory was 60.6 MB in the beginning and 73.2 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:04,494 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 113.2 MB. Free memory was 73.2 MB in the beginning and 72.5 MB in the end (delta: 689.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:04,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 88.9 MB in the end (delta: 157.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 172.76 ms. Allocated memory is still 113.2 MB. Free memory was 72.4 MB in the beginning and 91.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.09 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 88.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 458.42 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 61.0 MB in the end (delta: 27.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 331.54 ms. Allocated memory is still 113.2 MB. Free memory was 60.6 MB in the beginning and 73.2 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.75 ms. Allocated memory is still 113.2 MB. Free memory was 73.2 MB in the beginning and 72.5 MB in the end (delta: 689.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 12:06:06,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:06:06,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:06:06,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:06:06,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:06:06,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:06:06,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:06:06,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:06:06,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:06:06,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:06:06,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:06:06,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:06:06,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:06:06,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:06:06,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:06:06,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:06:06,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:06:06,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:06:06,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:06:06,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:06:06,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:06:06,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:06:06,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:06:06,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:06:06,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:06:06,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:06:06,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:06:06,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:06:06,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:06:06,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:06:06,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:06:06,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:06:06,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:06:06,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:06:06,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:06:06,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:06:06,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:06:06,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:06:06,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:06:06,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:06:06,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:06:06,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:06:06,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:06:06,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:06:06,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:06:06,270 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:06:06,271 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:06:06,271 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:06:06,271 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:06:06,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:06:06,271 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:06:06,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:06:06,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:06:06,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:06:06,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:06:06,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:06:06,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:06:06,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:06:06,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:06:06,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:06:06,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:06:06,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:06:06,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:06:06,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:06:06,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:06:06,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:06:06,276 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_291f66af-76b9-4028-9d84-bed492fa0ba3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-12-09 12:06:06,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:06:06,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:06:06,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:06:06,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:06:06,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:06:06,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-09 12:06:06,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/c3fce8201/df9ad07e3c0a40b38e458f1f15efa112/FLAG6b1d3cc32 [2020-12-09 12:06:06,952 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:06:06,952 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-12-09 12:06:06,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/c3fce8201/df9ad07e3c0a40b38e458f1f15efa112/FLAG6b1d3cc32 [2020-12-09 12:06:06,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/data/c3fce8201/df9ad07e3c0a40b38e458f1f15efa112 [2020-12-09 12:06:06,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:06:06,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:06:06,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:06:06,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:06:06,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:06:06,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:06" (1/1) ... [2020-12-09 12:06:06,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5583573f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:06, skipping insertion in model container [2020-12-09 12:06:06,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:06" (1/1) ... [2020-12-09 12:06:06,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:06:06,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:06:07,113 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_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-09 12:06:07,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:06:07,127 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:06:07,147 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_291f66af-76b9-4028-9d84-bed492fa0ba3/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c[1765,1778] [2020-12-09 12:06:07,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:06:07,164 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:06:07,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07 WrapperNode [2020-12-09 12:06:07,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:06:07,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:06:07,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:06:07,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:06:07,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:06:07,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:06:07,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:06:07,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:06:07,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... [2020-12-09 12:06:07,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:06:07,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:06:07,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:06:07,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:06:07,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 12:06:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:06:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:06:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 12:06:07,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:06:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:06:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:06:07,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:06:07,606 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 12:06:07,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:07 BoogieIcfgContainer [2020-12-09 12:06:07,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:06:07,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:06:07,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:06:07,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:06:07,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:06:06" (1/3) ... [2020-12-09 12:06:07,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71924a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:07, skipping insertion in model container [2020-12-09 12:06:07,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:07" (2/3) ... [2020-12-09 12:06:07,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71924a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:07, skipping insertion in model container [2020-12-09 12:06:07,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:07" (3/3) ... [2020-12-09 12:06:07,616 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-12-09 12:06:07,630 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:06:07,632 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:06:07,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:06:07,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:06:07,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:06:07,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:06:07,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:06:07,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:06:07,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:06:07,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:06:07,662 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:06:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-09 12:06:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:06:07,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:07,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:07,675 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-12-09 12:06:07,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:07,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22836000] [2020-12-09 12:06:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:07,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:06:07,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:07,817 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 12:06:07,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:07,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22836000] [2020-12-09 12:06:07,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:07,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:06:07,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495502588] [2020-12-09 12:06:07,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:06:07,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:07,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:06:07,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:06:07,834 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-09 12:06:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:07,856 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2020-12-09 12:06:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:06:07,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 12:06:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:07,864 INFO L225 Difference]: With dead ends: 56 [2020-12-09 12:06:07,864 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 12:06:07,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:06:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 12:06:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 12:06:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:06:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-12-09 12:06:07,896 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-12-09 12:06:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:07,896 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-12-09 12:06:07,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:06:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-09 12:06:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 12:06:07,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:07,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:08,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:06:08,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-12-09 12:06:08,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:08,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595442978] [2020-12-09 12:06:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:08,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:08,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:08,189 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 12:06:08,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:08,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595442978] [2020-12-09 12:06:08,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:08,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:08,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625478588] [2020-12-09 12:06:08,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:08,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:08,192 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-12-09 12:06:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:08,369 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-09 12:06:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:08,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 12:06:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:08,370 INFO L225 Difference]: With dead ends: 40 [2020-12-09 12:06:08,370 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 12:06:08,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 12:06:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 12:06:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 12:06:08,375 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-12-09 12:06:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:08,375 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 12:06:08,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 12:06:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 12:06:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:08,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:08,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:06:08,578 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-12-09 12:06:08,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:08,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054893007] [2020-12-09 12:06:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:08,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:08,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:08,685 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 12:06:08,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:08,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054893007] [2020-12-09 12:06:08,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:08,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:08,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605012188] [2020-12-09 12:06:08,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:08,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:08,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:08,688 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 12:06:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:08,808 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 12:06:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:08,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 12:06:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:08,809 INFO L225 Difference]: With dead ends: 42 [2020-12-09 12:06:08,809 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 12:06:08,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 12:06:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 12:06:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 12:06:08,814 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-12-09 12:06:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:08,815 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 12:06:08,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 12:06:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 12:06:08,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:08,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:09,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:06:09,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-12-09 12:06:09,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:09,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947829299] [2020-12-09 12:06:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:09,114 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 12:06:09,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:09,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947829299] [2020-12-09 12:06:09,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:09,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:09,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651653271] [2020-12-09 12:06:09,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:09,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:09,116 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 12:06:09,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:09,151 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 12:06:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:09,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 12:06:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:09,152 INFO L225 Difference]: With dead ends: 42 [2020-12-09 12:06:09,152 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 12:06:09,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 12:06:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 12:06:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 12:06:09,156 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-12-09 12:06:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:09,156 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 12:06:09,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 12:06:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 12:06:09,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:09,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:09,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 12:06:09,359 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:09,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-12-09 12:06:09,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:09,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206632230] [2020-12-09 12:06:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:09,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:09,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:09,508 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 12:06:09,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:09,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206632230] [2020-12-09 12:06:09,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:09,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:09,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748565164] [2020-12-09 12:06:09,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:09,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:09,510 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 12:06:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:09,549 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 12:06:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:09,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 12:06:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:09,550 INFO L225 Difference]: With dead ends: 42 [2020-12-09 12:06:09,550 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 12:06:09,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 12:06:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 12:06:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 12:06:09,554 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-12-09 12:06:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:09,554 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 12:06:09,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 12:06:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 12:06:09,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:09,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:09,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 12:06:09,756 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:09,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-12-09 12:06:09,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:09,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525748513] [2020-12-09 12:06:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 12:06:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:09,977 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-12-09 12:06:09,986 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 12:06:09,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:06:09,989 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:06:09,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:06:09,996 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 12:06:09,997 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-09 12:06:12,019 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_5| (_ BitVec 64))) (and (let ((.cse0 (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_5|)))) (fp.eq .cse0 .cse0)) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_5|) c_ULTIMATE.start___fpclassify_double_~msw~0) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_5|) c_ULTIMATE.start___fpclassify_double_~lsw~0))) is different from true [2020-12-09 12:06:21,553 WARN L197 SmtUtils]: Spent 9.48 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-09 12:06:23,726 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-12-09 12:06:23,739 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 12:06:23,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:23,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525748513] [2020-12-09 12:06:23,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:23,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 12:06:23,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129089329] [2020-12-09 12:06:23,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 12:06:23,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:23,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 12:06:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2020-12-09 12:06:23,741 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 8 states. [2020-12-09 12:06:27,905 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 12:06:32,001 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 12:06:38,223 WARN L197 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 42 [2020-12-09 12:06:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:40,644 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-12-09 12:06:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 12:06:40,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-09 12:06:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:40,645 INFO L225 Difference]: With dead ends: 62 [2020-12-09 12:06:40,645 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 12:06:40,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=56, Invalid=128, Unknown=2, NotChecked=24, Total=210 [2020-12-09 12:06:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 12:06:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2020-12-09 12:06:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:06:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-12-09 12:06:40,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 15 [2020-12-09 12:06:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:40,650 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-12-09 12:06:40,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 12:06:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-12-09 12:06:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 12:06:40,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:40,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:40,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 12:06:40,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:40,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1042649172, now seen corresponding path program 1 times [2020-12-09 12:06:40,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:40,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148588632] [2020-12-09 12:06:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:40,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:40,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:40,990 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 12:06:40,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:40,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148588632] [2020-12-09 12:06:40,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:40,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:40,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53978171] [2020-12-09 12:06:40,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:40,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:40,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:40,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:40,991 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2020-12-09 12:06:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:41,065 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-12-09 12:06:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:41,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 12:06:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:41,066 INFO L225 Difference]: With dead ends: 40 [2020-12-09 12:06:41,067 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 12:06:41,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 12:06:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 12:06:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-09 12:06:41,071 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2020-12-09 12:06:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:41,071 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-09 12:06:41,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-09 12:06:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 12:06:41,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:41,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:41,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 12:06:41,274 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:41,275 INFO L82 PathProgramCache]: Analyzing trace with hash -666515868, now seen corresponding path program 1 times [2020-12-09 12:06:41,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:41,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111653618] [2020-12-09 12:06:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/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 12:06:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:41,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:41,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:41,451 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 12:06:41,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:41,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111653618] [2020-12-09 12:06:41,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:41,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:41,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302733928] [2020-12-09 12:06:41,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:41,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:41,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:41,453 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-12-09 12:06:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:41,542 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-12-09 12:06:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:41,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 12:06:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:41,543 INFO L225 Difference]: With dead ends: 42 [2020-12-09 12:06:41,543 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 12:06:41,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 12:06:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 12:06:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-09 12:06:41,548 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 18 [2020-12-09 12:06:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:41,549 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-09 12:06:41,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-09 12:06:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 12:06:41,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:41,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:41,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 12:06:41,751 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:41,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1310041806, now seen corresponding path program 1 times [2020-12-09 12:06:41,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:41,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562915309] [2020-12-09 12:06:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:41,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 12:06:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:41,988 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 12:06:41,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:41,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562915309] [2020-12-09 12:06:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:41,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:41,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980926913] [2020-12-09 12:06:41,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:41,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:41,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:41,990 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-12-09 12:06:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:42,055 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-12-09 12:06:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:42,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 12:06:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:42,057 INFO L225 Difference]: With dead ends: 33 [2020-12-09 12:06:42,057 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 12:06:42,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 12:06:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 12:06:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-12-09 12:06:42,062 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 19 [2020-12-09 12:06:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:42,062 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-12-09 12:06:42,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:42,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-12-09 12:06:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 12:06:42,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:42,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:42,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 12:06:42,265 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1311888848, now seen corresponding path program 1 times [2020-12-09 12:06:42,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:42,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938463210] [2020-12-09 12:06:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:42,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:06:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:42,520 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 12:06:42,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:42,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938463210] [2020-12-09 12:06:42,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:42,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:06:42,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782768018] [2020-12-09 12:06:42,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:06:42,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:42,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:06:42,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:06:42,521 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-12-09 12:06:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:45,053 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-12-09 12:06:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:06:45,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 12:06:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:45,054 INFO L225 Difference]: With dead ends: 38 [2020-12-09 12:06:45,054 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 12:06:45,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-09 12:06:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 12:06:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-09 12:06:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:06:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-12-09 12:06:45,058 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-12-09 12:06:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:45,058 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-12-09 12:06:45,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:06:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-12-09 12:06:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 12:06:45,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:45,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:45,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 12:06:45,261 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 782688991, now seen corresponding path program 1 times [2020-12-09 12:06:45,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:45,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242600810] [2020-12-09 12:06:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:45,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:45,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:45,379 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 12:06:45,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:45,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242600810] [2020-12-09 12:06:45,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:45,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:45,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715681836] [2020-12-09 12:06:45,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:45,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:45,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:45,382 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-12-09 12:06:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:45,447 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-09 12:06:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:45,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 12:06:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:45,448 INFO L225 Difference]: With dead ends: 40 [2020-12-09 12:06:45,448 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 12:06:45,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 12:06:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 12:06:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:06:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-09 12:06:45,454 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-12-09 12:06:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:45,455 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-09 12:06:45,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-09 12:06:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 12:06:45,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:45,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:45,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 12:06:45,656 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash 839947293, now seen corresponding path program 1 times [2020-12-09 12:06:45,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:45,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167058838] [2020-12-09 12:06:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 12:06:45,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:45,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 12:06:46,229 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 12:06:46,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:46,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167058838] [2020-12-09 12:06:46,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:46,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 12:06:46,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039295325] [2020-12-09 12:06:46,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:06:46,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:46,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:06:46,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:06:46,230 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-12-09 12:06:46,530 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2020-12-09 12:06:46,836 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-12-09 12:06:47,035 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-12-09 12:06:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:47,126 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-12-09 12:06:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 12:06:47,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-09 12:06:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:47,127 INFO L225 Difference]: With dead ends: 50 [2020-12-09 12:06:47,127 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 12:06:47,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-09 12:06:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 12:06:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2020-12-09 12:06:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 12:06:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-12-09 12:06:47,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2020-12-09 12:06:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:47,133 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-09 12:06:47,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:06:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-12-09 12:06:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 12:06:47,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:47,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:47,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 12:06:47,335 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:47,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1085928516, now seen corresponding path program 1 times [2020-12-09 12:06:47,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:47,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070812680] [2020-12-09 12:06:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 12:06:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:47,619 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 12:06:47,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:47,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070812680] [2020-12-09 12:06:47,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:47,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 12:06:47,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715499329] [2020-12-09 12:06:47,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:06:47,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:06:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:06:47,620 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-12-09 12:06:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:47,861 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-12-09 12:06:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:06:47,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-09 12:06:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:47,862 INFO L225 Difference]: With dead ends: 40 [2020-12-09 12:06:47,862 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 12:06:47,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-09 12:06:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 12:06:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-12-09 12:06:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:06:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-09 12:06:47,866 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-12-09 12:06:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:47,866 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-09 12:06:47,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:06:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-09 12:06:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 12:06:47,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:47,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:48,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 12:06:48,067 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:48,068 INFO L82 PathProgramCache]: Analyzing trace with hash 598258075, now seen corresponding path program 1 times [2020-12-09 12:06:48,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:48,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105120289] [2020-12-09 12:06:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:48,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 12:06:48,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:48,234 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-12-09 12:06:48,242 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 12:06:48,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:06:48,243 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 12:06:48,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:06:48,261 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 12:06:48,261 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-09 12:06:48,323 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 12:06:48,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:48,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105120289] [2020-12-09 12:06:48,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:48,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:06:48,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777768316] [2020-12-09 12:06:48,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 12:06:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:48,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 12:06:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:06:48,324 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2020-12-09 12:06:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:48,653 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-09 12:06:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 12:06:48,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-09 12:06:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:48,654 INFO L225 Difference]: With dead ends: 34 [2020-12-09 12:06:48,654 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 12:06:48,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:06:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 12:06:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 12:06:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 12:06:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-09 12:06:48,658 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-12-09 12:06:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:48,658 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-09 12:06:48,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 12:06:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-09 12:06:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 12:06:48,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:06:48,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:06:48,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 12:06:48,860 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:06:48,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:06:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash -211088551, now seen corresponding path program 1 times [2020-12-09 12:06:48,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:06:48,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695379481] [2020-12-09 12:06:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 12:06:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:06:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:06:48,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:06:48,982 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 12:06:48,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:06:48,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695379481] [2020-12-09 12:06:48,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:06:48,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:06:48,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313365860] [2020-12-09 12:06:48,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:06:48,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:06:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:06:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:06:48,984 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2020-12-09 12:06:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:06:49,113 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-09 12:06:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:06:49,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-09 12:06:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:06:49,113 INFO L225 Difference]: With dead ends: 26 [2020-12-09 12:06:49,113 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:06:49,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:06:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:06:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:06:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:06:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:06:49,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 12:06:49,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:06:49,114 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:06:49,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:06:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:06:49,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:06:49,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 12:06:49,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:06:51,728 WARN L197 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-09 12:06:52,086 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-12-09 12:06:57,055 WARN L197 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 121 DAG size of output: 34 [2020-12-09 12:06:57,373 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2020-12-09 12:06:57,374 INFO L262 CegarLoopResult]: For program point L64(lines 64 73) no Hoare annotation was computed. [2020-12-09 12:06:57,374 INFO L262 CegarLoopResult]: For program point L64-2(lines 64 73) no Hoare annotation was computed. [2020-12-09 12:06:57,374 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-12-09 12:06:57,374 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L258 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= |ULTIMATE.start_fmin_double_#res| ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmin_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|) ULTIMATE.start___fpclassify_double_~msw~0) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|))))) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L69(lines 69 72) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L265 CegarLoopResult]: At program point L75(lines 55 76) the Hoare annotation is: true [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-12-09 12:06:57,375 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmin_double_~x) (= ULTIMATE.start_fmin_double_~x ULTIMATE.start___fpclassify_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 12:06:57,375 INFO L262 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|)) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|))))) [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L258 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmin_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L258 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (fp.eq ULTIMATE.start___fpclassify_double_~x ULTIMATE.start___fpclassify_double_~x) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmin_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= ULTIMATE.start_fmin_double_~x (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|))))) (= ULTIMATE.start_fmin_double_~x ULTIMATE.start___fpclassify_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv1 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_double_#res|)) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 12:06:57,376 INFO L258 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|) (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= ULTIMATE.start___fpclassify_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))) (= ULTIMATE.start___fpclassify_double_~lsw~0 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_8|)))) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmin_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-12-09 12:06:57,376 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-09 12:06:57,380 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,381 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,387 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,388 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,388 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,388 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,391 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,392 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,393 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,394 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,395 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,396 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,396 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,396 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,396 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:06:57 BoogieIcfgContainer [2020-12-09 12:06:57,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:06:57,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:06:57,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:06:57,398 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:06:57,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:07" (3/4) ... [2020-12-09 12:06:57,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:06:57,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 12:06:57,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 12:06:57,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 12:06:57,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:06:57,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((~fp.eq~DOUBLE(x, x) && 0bv32 == \result) || (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result)) [2020-12-09 12:06:57,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result [2020-12-09 12:06:57,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ~fp.eq~DOUBLE(x, x)) && x == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && x == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && (((3bv32 == \result || 1bv32 == \result) || 2bv32 == \result) || 4bv32 == \result)) && 0bv32 == \result [2020-12-09 12:06:57,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && \result == x) && x == x) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64, currentRoundingMode : FloatRoundingMode :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 12:06:57,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 12:06:57,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 0bv32 == \result) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64, currentRoundingMode : FloatRoundingMode :: (msw == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && lsw == v_skolemized_q#valueAsBitvector_8[31:0])) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 12:06:57,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_291f66af-76b9-4028-9d84-bed492fa0ba3/bin/utaipan/witness.graphml [2020-12-09 12:06:57,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:06:57,438 INFO L168 Benchmark]: Toolchain (without parser) took 50464.63 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 30.8 MB in the beginning and 69.7 MB in the end (delta: -38.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,438 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:57,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.57 ms. Allocated memory is still 52.4 MB. Free memory was 30.7 MB in the beginning and 31.3 MB in the end (delta: -646.2 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.77 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 31.2 MB in the beginning and 88.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,439 INFO L168 Benchmark]: Boogie Preprocessor took 33.68 ms. Allocated memory is still 104.9 MB. Free memory was 88.5 MB in the beginning and 87.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:06:57,440 INFO L168 Benchmark]: RCFGBuilder took 357.06 ms. Allocated memory is still 104.9 MB. Free memory was 86.5 MB in the beginning and 67.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,440 INFO L168 Benchmark]: TraceAbstraction took 49787.61 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 72.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,440 INFO L168 Benchmark]: Witness Printer took 39.57 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:06:57,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 189.57 ms. Allocated memory is still 52.4 MB. Free memory was 30.7 MB in the beginning and 31.3 MB in the end (delta: -646.2 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.77 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 31.2 MB in the beginning and 88.5 MB in the end (delta: -57.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.68 ms. Allocated memory is still 104.9 MB. Free memory was 88.5 MB in the beginning and 87.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 357.06 ms. Allocated memory is still 104.9 MB. Free memory was 86.5 MB in the beginning and 67.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 49787.61 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 72.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. * Witness Printer took 39.57 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 19]: Loop Invariant [2020-12-09 12:06:57,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,447 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,448 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,449 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 0bv32 == \result) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64, currentRoundingMode : FloatRoundingMode :: (msw == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && lsw == v_skolemized_q#valueAsBitvector_8[31:0])) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 22]: Loop Invariant [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,450 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,451 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 12:06:57,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ~fp.eq~DOUBLE(x, x)) && x == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && x == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && (((3bv32 == \result || 1bv32 == \result) || 2bv32 == \result) || 4bv32 == \result)) && 0bv32 == \result - InvariantResult [Line: 46]: Loop Invariant [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 12:06:57,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && \result == x) && x == x) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64, currentRoundingMode : FloatRoundingMode :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 12:06:57,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((~fp.eq~DOUBLE(x, x) && 0bv32 == \result) || (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result)) - InvariantResult [Line: 22]: Loop Invariant [2020-12-09 12:06:57,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:06:57,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.6s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 406 SDslu, 710 SDs, 0 SdLazy, 366 SolverSat, 18 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 192 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 30.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=12, 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, 15 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 246 HoareAnnotationTreeSize, 7 FomulaSimplifications, 11244 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4093 FormulaSimplificationTreeSizeReductionInter, 7.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 243 ConstructedInterpolants, 55 QuantifiedInterpolants, 26914 SizeOfPredicates, 60 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...