./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.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_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 8039b1e35b9e459b273890fa707790cd9b2d1812 ........................................................................................................................................................................................................................................................................................................................ 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_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 8039b1e35b9e459b273890fa707790cd9b2d1812 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:54:39,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:54:39,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:54:39,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:54:39,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:54:39,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:54:39,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:54:39,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:54:39,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:54:39,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:54:39,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:54:39,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:54:39,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:54:39,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:54:39,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:54:39,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:54:39,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:54:39,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:54:39,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:54:39,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:54:39,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:54:39,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:54:39,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:54:39,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:54:39,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:54:39,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:54:39,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:54:39,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:54:39,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:54:39,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:54:39,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:54:39,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:54:39,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:54:39,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:54:39,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:54:39,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:54:39,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:54:39,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:54:39,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:54:39,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:54:39,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:54:39,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:54:39,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:54:39,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:54:39,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:54:39,790 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:54:39,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:54:39,790 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:54:39,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:54:39,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:54:39,791 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:54:39,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:54:39,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:54:39,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:54:39,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:54:39,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:54:39,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:54:39,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:54:39,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:54:39,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:54:39,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:54:39,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:54:39,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:54:39,795 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_0eb56180-63d1-4853-af43-557a6c05ca3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-12-09 06:54:39,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:54:39,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:54:39,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:54:39,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:54:39,974 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:54:39,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-09 06:54:40,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/b678023fb/df09fbf6bda543f59e2a712137c5dd9d/FLAGf0b3261b0 [2020-12-09 06:54:40,392 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:54:40,392 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-09 06:54:40,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/b678023fb/df09fbf6bda543f59e2a712137c5dd9d/FLAGf0b3261b0 [2020-12-09 06:54:40,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/b678023fb/df09fbf6bda543f59e2a712137c5dd9d [2020-12-09 06:54:40,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:54:40,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:54:40,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:54:40,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:54:40,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:54:40,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ced38a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40, skipping insertion in model container [2020-12-09 06:54:40,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:54:40,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:54:40,543 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2020-12-09 06:54:40,547 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2020-12-09 06:54:40,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:54:40,555 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:54:40,573 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2020-12-09 06:54:40,574 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2020-12-09 06:54:40,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:54:40,587 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:54:40,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40 WrapperNode [2020-12-09 06:54:40,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:54:40,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:54:40,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:54:40,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:54:40,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:54:40,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:54:40,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:54:40,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:54:40,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... [2020-12-09 06:54:40,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:54:40,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:54:40,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:54:40,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:54:40,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:54:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:54:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 06:54:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:54:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:54:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 06:54:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:54:41,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:54:41,254 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 06:54:41,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:41 BoogieIcfgContainer [2020-12-09 06:54:41,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:54:41,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:54:41,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:54:41,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:54:41,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:54:40" (1/3) ... [2020-12-09 06:54:41,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b78e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:41, skipping insertion in model container [2020-12-09 06:54:41,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:40" (2/3) ... [2020-12-09 06:54:41,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b78e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:41, skipping insertion in model container [2020-12-09 06:54:41,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:41" (3/3) ... [2020-12-09 06:54:41,262 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-12-09 06:54:41,272 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:54:41,274 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 06:54:41,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 06:54:41,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:54:41,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:54:41,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:54:41,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:54:41,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:54:41,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:54:41,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:54:41,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:54:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-09 06:54:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:54:41,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:41,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:41,312 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1522122412, now seen corresponding path program 1 times [2020-12-09 06:54:41,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:54:41,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695340065] [2020-12-09 06:54:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:54:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:41,436 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 06:54:41,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695340065] [2020-12-09 06:54:41,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:41,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:54:41,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148067696] [2020-12-09 06:54:41,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:54:41,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:54:41,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:54:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:54:41,459 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-09 06:54:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:41,471 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-12-09 06:54:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:54:41,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 06:54:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:41,479 INFO L225 Difference]: With dead ends: 36 [2020-12-09 06:54:41,479 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 06:54:41,481 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 06:54:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 06:54:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 06:54:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 06:54:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 06:54:41,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-12-09 06:54:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:41,502 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 06:54:41,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:54:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 06:54:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:54:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:41,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:41,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:54:41,503 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:41,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:41,504 INFO L82 PathProgramCache]: Analyzing trace with hash -2109863720, now seen corresponding path program 1 times [2020-12-09 06:54:41,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:54:41,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094657416] [2020-12-09 06:54:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:54:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:54:41,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:54:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:54:41,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:54:41,657 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:54:41,657 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:54:41,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:54:41,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:54:41 BoogieIcfgContainer [2020-12-09 06:54:41,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:54:41,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:54:41,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:54:41,685 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:54:41,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:41" (3/4) ... [2020-12-09 06:54:41,687 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:54:41,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:54:41,689 INFO L168 Benchmark]: Toolchain (without parser) took 1278.86 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 63.1 MB in the beginning and 64.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:54:41,689 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 67.1 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:54:41,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.60 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 52.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:54:41,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:54:41,691 INFO L168 Benchmark]: Boogie Preprocessor took 21.77 ms. Allocated memory is still 83.9 MB. Free memory was 50.1 MB in the beginning and 48.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:54:41,691 INFO L168 Benchmark]: RCFGBuilder took 613.63 ms. Allocated memory is still 83.9 MB. Free memory was 48.5 MB in the beginning and 44.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:54:41,692 INFO L168 Benchmark]: TraceAbstraction took 426.82 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 64.2 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:54:41,692 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 102.8 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:54:41,694 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 67.1 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 177.60 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 52.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 83.9 MB. Free memory was 52.1 MB in the beginning and 50.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.77 ms. Allocated memory is still 83.9 MB. Free memory was 50.1 MB in the beginning and 48.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 613.63 ms. Allocated memory is still 83.9 MB. Free memory was 48.5 MB in the beginning and 44.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 426.82 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 64.2 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.94 ms. Allocated memory is still 102.8 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L59] return x != x; [L71] EXPR !isnan_float(x) && isnan_float(y) [L59] return x != x; [L71] EXPR !isnan_float(x) && isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:54:43,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:54:43,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:54:43,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:54:43,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:54:43,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:54:43,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:54:43,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:54:43,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:54:43,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:54:43,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:54:43,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:54:43,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:54:43,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:54:43,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:54:43,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:54:43,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:54:43,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:54:43,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:54:43,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:54:43,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:54:43,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:54:43,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:54:43,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:54:43,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:54:43,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:54:43,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:54:43,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:54:43,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:54:43,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:54:43,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:54:43,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:54:43,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:54:43,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:54:43,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:54:43,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:54:43,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:54:43,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:54:43,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:54:43,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:54:43,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:54:43,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:54:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:54:43,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:54:43,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:54:43,436 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:54:43,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:54:43,437 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:54:43,437 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:54:43,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:54:43,437 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:54:43,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:54:43,438 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:54:43,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:54:43,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:54:43,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:54:43,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:54:43,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:54:43,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:54:43,441 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_0eb56180-63d1-4853-af43-557a6c05ca3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-12-09 06:54:43,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:54:43,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:54:43,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:54:43,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:54:43,691 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:54:43,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-09 06:54:43,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/e15e0f913/a1c2c81f2adc49d8b1d8ce758067da37/FLAG6a7d3225b [2020-12-09 06:54:44,121 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:54:44,122 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-09 06:54:44,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/e15e0f913/a1c2c81f2adc49d8b1d8ce758067da37/FLAG6a7d3225b [2020-12-09 06:54:44,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/data/e15e0f913/a1c2c81f2adc49d8b1d8ce758067da37 [2020-12-09 06:54:44,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:54:44,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:54:44,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:54:44,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:54:44,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:54:44,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6f101f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44, skipping insertion in model container [2020-12-09 06:54:44,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:54:44,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:54:44,275 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2020-12-09 06:54:44,278 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2020-12-09 06:54:44,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:54:44,298 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:54:44,320 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2020-12-09 06:54:44,321 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_0eb56180-63d1-4853-af43-557a6c05ca3a/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2020-12-09 06:54:44,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:54:44,335 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:54:44,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44 WrapperNode [2020-12-09 06:54:44,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:54:44,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:54:44,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:54:44,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:54:44,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:54:44,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:54:44,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:54:44,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:54:44,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... [2020-12-09 06:54:44,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:54:44,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:54:44,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:54:44,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:54:44,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:54:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:54:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 06:54:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:54:44,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:54:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 06:54:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:54:44,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:54:44,788 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 06:54:44,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:44 BoogieIcfgContainer [2020-12-09 06:54:44,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:54:44,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:54:44,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:54:44,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:54:44,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:54:44" (1/3) ... [2020-12-09 06:54:44,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acad020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:44, skipping insertion in model container [2020-12-09 06:54:44,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:54:44" (2/3) ... [2020-12-09 06:54:44,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acad020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:54:44, skipping insertion in model container [2020-12-09 06:54:44,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:44" (3/3) ... [2020-12-09 06:54:44,796 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-12-09 06:54:44,806 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:54:44,809 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 06:54:44,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 06:54:44,837 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:54:44,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:54:44,838 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:54:44,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:54:44,838 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:54:44,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:54:44,838 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:54:44,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:54:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-12-09 06:54:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:54:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:44,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:44,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-12-09 06:54:44,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:44,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10973144] [2020-12-09 06:54:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:44,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:54:44,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:44,979 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 06:54:44,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:44,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10973144] [2020-12-09 06:54:44,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:44,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:54:44,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730334372] [2020-12-09 06:54:44,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:54:44,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:54:45,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:54:45,002 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-12-09 06:54:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:45,019 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2020-12-09 06:54:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:54:45,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-09 06:54:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:45,027 INFO L225 Difference]: With dead ends: 82 [2020-12-09 06:54:45,027 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 06:54:45,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 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 06:54:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 06:54:45,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-09 06:54:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 06:54:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-12-09 06:54:45,056 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-12-09 06:54:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:45,057 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-12-09 06:54:45,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:54:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-12-09 06:54:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:54:45,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:45,058 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 06:54:45,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:54:45,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:45,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-12-09 06:54:45,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:45,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178396386] [2020-12-09 06:54:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:45,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:45,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:45,333 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 06:54:45,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:45,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178396386] [2020-12-09 06:54:45,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:45,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:45,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805070832] [2020-12-09 06:54:45,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:45,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:45,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:45,336 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-12-09 06:54:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:45,378 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-12-09 06:54:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:54:45,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 06:54:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:45,380 INFO L225 Difference]: With dead ends: 82 [2020-12-09 06:54:45,380 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 06:54:45,381 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 06:54:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 06:54:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-09 06:54:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-09 06:54:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-12-09 06:54:45,388 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-12-09 06:54:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:45,388 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-12-09 06:54:45,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-12-09 06:54:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 06:54:45,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:45,390 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 06:54:45,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:54:45,592 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:45,595 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-12-09 06:54:45,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:45,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545631390] [2020-12-09 06:54:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:45,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:45,714 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 06:54:45,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:45,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545631390] [2020-12-09 06:54:45,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:45,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:45,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553616503] [2020-12-09 06:54:45,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:45,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:45,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:45,716 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2020-12-09 06:54:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:45,750 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-12-09 06:54:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:45,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 06:54:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:45,752 INFO L225 Difference]: With dead ends: 77 [2020-12-09 06:54:45,752 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 06:54:45,752 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 06:54:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 06:54:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-12-09 06:54:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 06:54:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-09 06:54:45,757 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-12-09 06:54:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:45,757 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-09 06:54:45,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-09 06:54:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:54:45,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:45,758 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 06:54:45,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:54:45,959 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2020-12-09 06:54:45,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:45,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665569408] [2020-12-09 06:54:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:46,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:46,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:54:46,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:46,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665569408] [2020-12-09 06:54:46,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:46,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774764175] [2020-12-09 06:54:46,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:46,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:46,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:46,082 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-12-09 06:54:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:46,118 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-12-09 06:54:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:46,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 06:54:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:46,120 INFO L225 Difference]: With dead ends: 79 [2020-12-09 06:54:46,120 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 06:54:46,121 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 06:54:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 06:54:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-12-09 06:54:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 06:54:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-09 06:54:46,127 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-12-09 06:54:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:46,128 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-09 06:54:46,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-09 06:54:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 06:54:46,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:46,129 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 06:54:46,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:54:46,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2020-12-09 06:54:46,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:46,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926177139] [2020-12-09 06:54:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:46,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:46,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:46,427 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 06:54:46,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:46,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926177139] [2020-12-09 06:54:46,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:46,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:46,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262257463] [2020-12-09 06:54:46,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:46,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:46,428 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-12-09 06:54:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:46,467 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-12-09 06:54:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:46,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 06:54:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:46,468 INFO L225 Difference]: With dead ends: 79 [2020-12-09 06:54:46,468 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 06:54:46,469 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 06:54:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 06:54:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-12-09 06:54:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 06:54:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-09 06:54:46,473 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2020-12-09 06:54:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:46,473 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-09 06:54:46,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-09 06:54:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 06:54:46,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:46,474 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 06:54:46,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:54:46,675 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-12-09 06:54:46,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:46,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463503674] [2020-12-09 06:54:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:46,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:46,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:46,847 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:46,847 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:46,897 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 06:54:46,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:46,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463503674] [2020-12-09 06:54:46,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:46,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:54:46,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737221446] [2020-12-09 06:54:46,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:54:46,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:54:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:54:46,898 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 7 states. [2020-12-09 06:54:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:47,140 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-12-09 06:54:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 06:54:47,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-09 06:54:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:47,142 INFO L225 Difference]: With dead ends: 149 [2020-12-09 06:54:47,142 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 06:54:47,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:54:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 06:54:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-12-09 06:54:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 06:54:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-12-09 06:54:47,149 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-12-09 06:54:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:47,150 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-12-09 06:54:47,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:54:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-12-09 06:54:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 06:54:47,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:47,151 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 06:54:47,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 06:54:47,352 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-12-09 06:54:47,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:47,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006307179] [2020-12-09 06:54:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:47,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:47,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:47,471 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:47,472 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:47,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:47,609 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 06:54:47,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:47,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006307179] [2020-12-09 06:54:47,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:47,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 06:54:47,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205075547] [2020-12-09 06:54:47,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:54:47,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:47,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:54:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:54:47,612 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 9 states. [2020-12-09 06:54:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:48,102 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-12-09 06:54:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 06:54:48,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-09 06:54:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:48,103 INFO L225 Difference]: With dead ends: 180 [2020-12-09 06:54:48,103 INFO L226 Difference]: Without dead ends: 178 [2020-12-09 06:54:48,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-12-09 06:54:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-09 06:54:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-12-09 06:54:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 06:54:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-12-09 06:54:48,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-12-09 06:54:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:48,112 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-12-09 06:54:48,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:54:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-12-09 06:54:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 06:54:48,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:48,113 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, 1] [2020-12-09 06:54:48,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 06:54:48,314 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:48,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-12-09 06:54:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:48,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859677756] [2020-12-09 06:54:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:48,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:48,384 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:48,385 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:48,421 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 06:54:48,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:48,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859677756] [2020-12-09 06:54:48,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:48,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:54:48,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341479388] [2020-12-09 06:54:48,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:54:48,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:54:48,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:54:48,423 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 7 states. [2020-12-09 06:54:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:48,724 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-12-09 06:54:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:54:48,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-09 06:54:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:48,725 INFO L225 Difference]: With dead ends: 166 [2020-12-09 06:54:48,725 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 06:54:48,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-09 06:54:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 06:54:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-12-09 06:54:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 06:54:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-12-09 06:54:48,732 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-12-09 06:54:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:48,733 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-12-09 06:54:48,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:54:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-12-09 06:54:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 06:54:48,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:48,734 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, 1, 1] [2020-12-09 06:54:48,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 06:54:48,935 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:48,937 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-12-09 06:54:48,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:48,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305856196] [2020-12-09 06:54:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:49,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:49,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:49,030 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 06:54:49,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305856196] [2020-12-09 06:54:49,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:49,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:49,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64911225] [2020-12-09 06:54:49,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:49,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:49,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:49,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:49,031 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 4 states. [2020-12-09 06:54:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:49,067 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2020-12-09 06:54:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:49,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-09 06:54:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:49,068 INFO L225 Difference]: With dead ends: 133 [2020-12-09 06:54:49,068 INFO L226 Difference]: Without dead ends: 117 [2020-12-09 06:54:49,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 06:54:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-09 06:54:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2020-12-09 06:54:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-09 06:54:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-12-09 06:54:49,075 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-12-09 06:54:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:49,075 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-12-09 06:54:49,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-12-09 06:54:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 06:54:49,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:49,076 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, 1, 1] [2020-12-09 06:54:49,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 06:54:49,277 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:49,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-12-09 06:54:49,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:49,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567282096] [2020-12-09 06:54:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:49,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:54:49,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:49,394 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 06:54:49,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:49,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567282096] [2020-12-09 06:54:49,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:49,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:54:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488439134] [2020-12-09 06:54:49,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:54:49,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:49,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:54:49,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:54:49,395 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-12-09 06:54:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:49,407 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-12-09 06:54:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:54:49,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 06:54:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:49,408 INFO L225 Difference]: With dead ends: 96 [2020-12-09 06:54:49,408 INFO L226 Difference]: Without dead ends: 94 [2020-12-09 06:54:49,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:54:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-09 06:54:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-12-09 06:54:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-09 06:54:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-12-09 06:54:49,417 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-12-09 06:54:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:49,417 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-12-09 06:54:49,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:54:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-12-09 06:54:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:54:49,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:49,419 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, 1, 1, 1] [2020-12-09 06:54:49,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 06:54:49,620 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:49,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1838896133, now seen corresponding path program 1 times [2020-12-09 06:54:49,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:49,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382065395] [2020-12-09 06:54:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:49,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:49,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:49,769 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 06:54:49,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382065395] [2020-12-09 06:54:49,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:49,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:49,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104140100] [2020-12-09 06:54:49,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:49,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:49,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:49,771 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 4 states. [2020-12-09 06:54:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:49,822 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2020-12-09 06:54:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:49,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-09 06:54:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:49,823 INFO L225 Difference]: With dead ends: 139 [2020-12-09 06:54:49,824 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 06:54:49,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 06:54:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 06:54:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2020-12-09 06:54:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-09 06:54:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-12-09 06:54:49,829 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 25 [2020-12-09 06:54:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:49,829 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-12-09 06:54:49,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-12-09 06:54:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:54:49,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:49,830 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, 1, 1, 1] [2020-12-09 06:54:50,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 06:54:50,031 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2020-12-09 06:54:50,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:50,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789432949] [2020-12-09 06:54:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:50,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:50,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:50,164 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:50,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:50,207 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 06:54:50,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:50,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789432949] [2020-12-09 06:54:50,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:50,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:54:50,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874488559] [2020-12-09 06:54:50,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:54:50,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:50,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:54:50,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:54:50,208 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 7 states. [2020-12-09 06:54:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:50,399 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-12-09 06:54:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 06:54:50,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-09 06:54:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:50,400 INFO L225 Difference]: With dead ends: 131 [2020-12-09 06:54:50,400 INFO L226 Difference]: Without dead ends: 118 [2020-12-09 06:54:50,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:54:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-09 06:54:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-12-09 06:54:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 06:54:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-12-09 06:54:50,405 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-12-09 06:54:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:50,405 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-12-09 06:54:50,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:54:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-12-09 06:54:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:54:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:50,406 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, 1, 1, 1] [2020-12-09 06:54:50,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 06:54:50,607 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-12-09 06:54:50,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:50,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651577648] [2020-12-09 06:54:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:50,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 06:54:50,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:50,800 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:50,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:50,845 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 06:54:50,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:50,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651577648] [2020-12-09 06:54:50,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:50,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 06:54:50,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719578687] [2020-12-09 06:54:50,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:54:50,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:54:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:54:50,847 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 8 states. [2020-12-09 06:54:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:51,059 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-12-09 06:54:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:54:51,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-09 06:54:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:51,060 INFO L225 Difference]: With dead ends: 114 [2020-12-09 06:54:51,060 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 06:54:51,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-09 06:54:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 06:54:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-09 06:54:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 06:54:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-12-09 06:54:51,064 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-12-09 06:54:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:51,064 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-12-09 06:54:51,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:54:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-12-09 06:54:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 06:54:51,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:51,064 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, 1, 1, 1] [2020-12-09 06:54:51,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 06:54:51,266 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:51,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-12-09 06:54:51,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:51,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597996811] [2020-12-09 06:54:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:51,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:51,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:51,399 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:51,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:51,440 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 06:54:51,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:51,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597996811] [2020-12-09 06:54:51,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:51,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:54:51,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801855197] [2020-12-09 06:54:51,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:54:51,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:54:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:54:51,442 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 7 states. [2020-12-09 06:54:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:51,597 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-12-09 06:54:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 06:54:51,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-09 06:54:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:51,598 INFO L225 Difference]: With dead ends: 84 [2020-12-09 06:54:51,598 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 06:54:51,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:54:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 06:54:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-09 06:54:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 06:54:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-12-09 06:54:51,601 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-12-09 06:54:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:51,601 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-12-09 06:54:51,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:54:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-12-09 06:54:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 06:54:51,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:51,602 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, 1, 1, 1, 1] [2020-12-09 06:54:51,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 06:54:51,803 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-12-09 06:54:51,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:51,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321832222] [2020-12-09 06:54:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/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 06:54:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:51,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:54:51,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:51,886 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:51,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:51,920 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 06:54:51,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:51,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321832222] [2020-12-09 06:54:51,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:51,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 06:54:51,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612118879] [2020-12-09 06:54:51,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:54:51,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:51,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:54:51,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:54:51,922 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 6 states. [2020-12-09 06:54:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:52,103 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-12-09 06:54:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:54:52,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-12-09 06:54:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:52,104 INFO L225 Difference]: With dead ends: 82 [2020-12-09 06:54:52,104 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 06:54:52,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:54:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 06:54:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-09 06:54:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 06:54:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-12-09 06:54:52,108 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-12-09 06:54:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:52,108 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-12-09 06:54:52,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:54:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-12-09 06:54:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 06:54:52,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:52,109 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, 1, 1, 1, 1] [2020-12-09 06:54:52,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 06:54:52,310 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:52,311 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-12-09 06:54:52,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:52,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490470641] [2020-12-09 06:54:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:52,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:54:52,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:52,570 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-09 06:54:52,570 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:52,652 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 06:54:52,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:52,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490470641] [2020-12-09 06:54:52,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:52,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 06:54:52,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603179924] [2020-12-09 06:54:52,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:54:52,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:52,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:54:52,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:54:52,653 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 9 states. [2020-12-09 06:54:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:53,305 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2020-12-09 06:54:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:54:53,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-09 06:54:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:53,306 INFO L225 Difference]: With dead ends: 120 [2020-12-09 06:54:53,307 INFO L226 Difference]: Without dead ends: 109 [2020-12-09 06:54:53,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:54:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-09 06:54:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2020-12-09 06:54:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 06:54:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-12-09 06:54:53,311 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2020-12-09 06:54:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:53,311 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-12-09 06:54:53,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:54:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-12-09 06:54:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 06:54:53,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:53,311 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, 1, 1, 1, 1] [2020-12-09 06:54:53,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 06:54:53,513 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1994202826, now seen corresponding path program 1 times [2020-12-09 06:54:53,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:53,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406242961] [2020-12-09 06:54:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:53,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:53,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:53,607 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 06:54:53,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:53,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406242961] [2020-12-09 06:54:53,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:53,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:53,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409381718] [2020-12-09 06:54:53,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:53,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:53,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:53,608 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 4 states. [2020-12-09 06:54:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:53,635 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-12-09 06:54:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:53,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-09 06:54:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:53,636 INFO L225 Difference]: With dead ends: 120 [2020-12-09 06:54:53,636 INFO L226 Difference]: Without dead ends: 103 [2020-12-09 06:54:53,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 06:54:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-09 06:54:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-09 06:54:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 06:54:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-12-09 06:54:53,640 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2020-12-09 06:54:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:53,641 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-12-09 06:54:53,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-12-09 06:54:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 06:54:53,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:53,641 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, 1, 1, 1, 1, 1] [2020-12-09 06:54:53,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-09 06:54:53,842 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:53,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash 548357897, now seen corresponding path program 1 times [2020-12-09 06:54:53,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:53,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957379774] [2020-12-09 06:54:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 06:54:53,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:53,972 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:53,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:53,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:54,110 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 06:54:54,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:54,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957379774] [2020-12-09 06:54:54,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:54,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 06:54:54,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299832177] [2020-12-09 06:54:54,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:54:54,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:54:54,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:54:54,112 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 10 states. [2020-12-09 06:54:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:54,636 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2020-12-09 06:54:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:54:54,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-12-09 06:54:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:54,637 INFO L225 Difference]: With dead ends: 81 [2020-12-09 06:54:54,637 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 06:54:54,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-12-09 06:54:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 06:54:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-09 06:54:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 06:54:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-12-09 06:54:54,643 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 27 [2020-12-09 06:54:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:54,644 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-12-09 06:54:54,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:54:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-12-09 06:54:54,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 06:54:54,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:54,644 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, 1, 1, 1, 1, 1] [2020-12-09 06:54:54,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-09 06:54:54,846 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:54,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2066405290, now seen corresponding path program 1 times [2020-12-09 06:54:54,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:54,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239948991] [2020-12-09 06:54:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:54,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:54,935 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 06:54:54,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:54,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239948991] [2020-12-09 06:54:54,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:54,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:54,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766299780] [2020-12-09 06:54:54,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:54,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:54,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:54,936 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 4 states. [2020-12-09 06:54:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:54,969 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2020-12-09 06:54:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:54,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-09 06:54:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:54,970 INFO L225 Difference]: With dead ends: 107 [2020-12-09 06:54:54,970 INFO L226 Difference]: Without dead ends: 88 [2020-12-09 06:54:54,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 06:54:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-09 06:54:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2020-12-09 06:54:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 06:54:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-09 06:54:54,974 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 27 [2020-12-09 06:54:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:54,974 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-09 06:54:54,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-09 06:54:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 06:54:54,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:54,975 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, 1, 1, 1, 1, 1] [2020-12-09 06:54:55,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-09 06:54:55,175 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-12-09 06:54:55,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:55,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506454340] [2020-12-09 06:54:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:55,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 06:54:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:55,242 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:55,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:55,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:55,444 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 06:54:55,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:55,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506454340] [2020-12-09 06:54:55,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:55,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 06:54:55,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180417353] [2020-12-09 06:54:55,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 06:54:55,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:55,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 06:54:55,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:54:55,445 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 12 states. [2020-12-09 06:54:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:56,790 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2020-12-09 06:54:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-09 06:54:56,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-12-09 06:54:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:56,791 INFO L225 Difference]: With dead ends: 193 [2020-12-09 06:54:56,791 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 06:54:56,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 06:54:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 06:54:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-12-09 06:54:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 06:54:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-12-09 06:54:56,796 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-12-09 06:54:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:56,796 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-12-09 06:54:56,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 06:54:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-12-09 06:54:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 06:54:56,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:56,796 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, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:56,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-12-09 06:54:56,997 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2020-12-09 06:54:56,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:57,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424020324] [2020-12-09 06:54:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:57,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 06:54:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:57,090 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:57,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:57,233 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 06:54:57,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:57,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424020324] [2020-12-09 06:54:57,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:57,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-09 06:54:57,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388533451] [2020-12-09 06:54:57,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:54:57,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:54:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:54:57,234 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-12-09 06:54:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:57,826 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2020-12-09 06:54:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 06:54:57,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-12-09 06:54:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:57,827 INFO L225 Difference]: With dead ends: 135 [2020-12-09 06:54:57,828 INFO L226 Difference]: Without dead ends: 111 [2020-12-09 06:54:57,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-12-09 06:54:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-09 06:54:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 43. [2020-12-09 06:54:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 06:54:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-12-09 06:54:57,832 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 28 [2020-12-09 06:54:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:57,832 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-12-09 06:54:57,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:54:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-12-09 06:54:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 06:54:57,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:57,832 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, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:58,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-12-09 06:54:58,033 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:58,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1106626442, now seen corresponding path program 1 times [2020-12-09 06:54:58,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:58,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494980024] [2020-12-09 06:54:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:58,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:54:58,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:58,114 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 06:54:58,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:58,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494980024] [2020-12-09 06:54:58,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:58,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:54:58,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060911679] [2020-12-09 06:54:58,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:54:58,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:54:58,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:54:58,115 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-12-09 06:54:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:58,153 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-12-09 06:54:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:54:58,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-09 06:54:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:58,154 INFO L225 Difference]: With dead ends: 67 [2020-12-09 06:54:58,154 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 06:54:58,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 06:54:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 06:54:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2020-12-09 06:54:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-09 06:54:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-12-09 06:54:58,158 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-12-09 06:54:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:58,158 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-12-09 06:54:58,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:54:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-12-09 06:54:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 06:54:58,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:58,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:58,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-09 06:54:58,359 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2020-12-09 06:54:58,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:58,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491057126] [2020-12-09 06:54:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:58,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:54:58,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:58,433 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:58,434 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:58,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:58,478 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 06:54:58,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:58,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491057126] [2020-12-09 06:54:58,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:58,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 06:54:58,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791589581] [2020-12-09 06:54:58,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:54:58,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:54:58,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:54:58,479 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-12-09 06:54:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:58,644 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-12-09 06:54:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:54:58,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-09 06:54:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:58,645 INFO L225 Difference]: With dead ends: 52 [2020-12-09 06:54:58,645 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 06:54:58,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:54:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 06:54:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-09 06:54:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-09 06:54:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-12-09 06:54:58,648 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-12-09 06:54:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:58,649 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-12-09 06:54:58,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:54:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-12-09 06:54:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 06:54:58,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:58,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:58,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-09 06:54:58,850 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2020-12-09 06:54:58,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:58,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988623445] [2020-12-09 06:54:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:59,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 06:54:59,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:59,054 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:54:59,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:59,067 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:59,112 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 06:54:59,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:59,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988623445] [2020-12-09 06:54:59,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:59,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 06:54:59,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303855709] [2020-12-09 06:54:59,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:54:59,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:59,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:54:59,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:54:59,113 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2020-12-09 06:54:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:54:59,431 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-12-09 06:54:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:54:59,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-09 06:54:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:54:59,432 INFO L225 Difference]: With dead ends: 53 [2020-12-09 06:54:59,432 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 06:54:59,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:54:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 06:54:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-09 06:54:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 06:54:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-12-09 06:54:59,435 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-12-09 06:54:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:54:59,435 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-12-09 06:54:59,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:54:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-12-09 06:54:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 06:54:59,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:54:59,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:54:59,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-12-09 06:54:59,636 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:54:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:54:59,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2020-12-09 06:54:59,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:54:59,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713257691] [2020-12-09 06:54:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-09 06:54:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:54:59,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:54:59,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:54:59,746 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-09 06:54:59,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:54:59,854 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 06:54:59,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:54:59,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713257691] [2020-12-09 06:54:59,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:54:59,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:54:59,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146427390] [2020-12-09 06:54:59,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:54:59,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:54:59,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:54:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:54:59,855 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2020-12-09 06:55:00,329 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2020-12-09 06:55:00,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:55:00,401 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2020-12-09 06:55:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 06:55:00,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-12-09 06:55:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:55:00,402 INFO L225 Difference]: With dead ends: 71 [2020-12-09 06:55:00,402 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 06:55:00,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:55:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 06:55:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2020-12-09 06:55:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-09 06:55:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-12-09 06:55:00,406 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 33 [2020-12-09 06:55:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:55:00,406 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-12-09 06:55:00,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:55:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-12-09 06:55:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 06:55:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:55:00,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:55:00,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-12-09 06:55:00,607 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:55:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:55:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash -26785796, now seen corresponding path program 1 times [2020-12-09 06:55:00,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:55:00,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101433454] [2020-12-09 06:55:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-12-09 06:55:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:55:00,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:55:00,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:55:00,811 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-09 06:55:00,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:55:00,903 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 06:55:00,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:55:00,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101433454] [2020-12-09 06:55:00,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:55:00,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 06:55:00,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808433765] [2020-12-09 06:55:00,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:55:00,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:55:00,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:55:00,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:55:00,905 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2020-12-09 06:55:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:55:01,168 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-12-09 06:55:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 06:55:01,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-09 06:55:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:55:01,168 INFO L225 Difference]: With dead ends: 59 [2020-12-09 06:55:01,169 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 06:55:01,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-09 06:55:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 06:55:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-12-09 06:55:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 06:55:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-09 06:55:01,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2020-12-09 06:55:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:55:01,172 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-09 06:55:01,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:55:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-09 06:55:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 06:55:01,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:55:01,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:55:01,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-12-09 06:55:01,373 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:55:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:55:01,375 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2020-12-09 06:55:01,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:55:01,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124665786] [2020-12-09 06:55:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2020-12-09 06:55:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:55:01,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:55:01,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:55:01,607 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 06:55:01,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:55:01,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124665786] [2020-12-09 06:55:01,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:55:01,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:55:01,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006100910] [2020-12-09 06:55:01,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:55:01,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:55:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:55:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:55:01,608 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-09 06:55:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:55:01,623 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 06:55:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:55:01,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-09 06:55:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:55:01,623 INFO L225 Difference]: With dead ends: 39 [2020-12-09 06:55:01,623 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:55:01,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 06:55:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:55:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:55:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:55:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:55:01,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-12-09 06:55:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:55:01,624 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:55:01,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:55:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:55:01,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:55:01,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2020-12-09 06:55:01,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:55:02,024 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 112 [2020-12-09 06:55:04,894 WARN L197 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2020-12-09 06:55:05,094 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-12-09 06:55:05,252 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2020-12-09 06:55:05,392 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-12-09 06:55:05,495 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2020-12-09 06:55:05,918 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-12-09 06:55:06,026 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-12-09 06:55:06,384 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L262 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-12-09 06:55:06,420 INFO L265 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-12-09 06:55:06,421 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-12-09 06:55:06,422 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)) (and .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x)))) [2020-12-09 06:55:06,422 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-12-09 06:55:06,422 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-12-09 06:55:06,422 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)))) [2020-12-09 06:55:06,422 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmin_float_~x .cse1) (let ((.cse2 (fp.eq .cse1 .cse1))) (or (and (not (= (bvadd ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse0 (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2139095039 32))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483649 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872255 32)))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872256 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv4286578687 32)))) .cse2) (and .cse0 (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse2))) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x))))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse8 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse5 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (.cse6 (not .cse1)) (.cse7 (or (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) (.cse2 (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|) .cse2) (and .cse3 (or (and .cse4 .cse0 .cse5 .cse6 .cse7 .cse2) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse5 .cse6 .cse2)) .cse8) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse3 .cse5 .cse8 .cse6 .cse2) (and .cse4 .cse0 (or (= ULTIMATE.start_fmin_float_~y (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= ULTIMATE.start_fmin_float_~y (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)))) .cse5 .cse6 .cse7 .cse2)))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse2 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse2)))) [2020-12-09 06:55:06,423 INFO L258 CegarLoopResult]: At program point L59-5(line 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-12-09 06:55:06,424 INFO L258 CegarLoopResult]: At program point L59-6(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)) (and (not (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse1 .cse1))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))))) [2020-12-09 06:55:06,424 INFO L258 CegarLoopResult]: At program point L59-7(line 59) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-12-09 06:55:06,424 INFO L262 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-12-09 06:55:06,424 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-12-09 06:55:06,424 INFO L262 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2020-12-09 06:55:06,424 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-12-09 06:55:06,424 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse4 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not .cse4))) (or (and .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (or (= (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0) (= (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_fmin_float_~y .cse3)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse4 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2)))) [2020-12-09 06:55:06,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:55:06 BoogieIcfgContainer [2020-12-09 06:55:06,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:55:06,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:55:06,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:55:06,452 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:55:06,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:54:44" (3/4) ... [2020-12-09 06:55:06,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:55:06,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-12-09 06:55:06,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 06:55:06,466 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 06:55:06,466 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:55:06,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-12-09 06:55:06,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2020-12-09 06:55:06,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2020-12-09 06:55:06,484 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2020-12-09 06:55:06,484 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) [2020-12-09 06:55:06,484 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) [2020-12-09 06:55:06,484 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2020-12-09 06:55:06,484 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2020-12-09 06:55:06,485 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2020-12-09 06:55:06,485 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-12-09 06:55:06,485 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) [2020-12-09 06:55:06,486 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) [2020-12-09 06:55:06,486 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) [2020-12-09 06:55:06,506 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0eb56180-63d1-4853-af43-557a6c05ca3a/bin/utaipan/witness.graphml [2020-12-09 06:55:06,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:55:06,507 INFO L168 Benchmark]: Toolchain (without parser) took 22363.89 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 52.7 MB in the beginning and 56.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,508 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:55:06,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 51.6 MB in the end (delta: 871.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.33 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,509 INFO L168 Benchmark]: Boogie Preprocessor took 26.43 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,509 INFO L168 Benchmark]: RCFGBuilder took 392.08 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 58.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,509 INFO L168 Benchmark]: TraceAbstraction took 21660.12 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 57.9 MB in the beginning and 61.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,509 INFO L168 Benchmark]: Witness Printer took 54.97 ms. Allocated memory is still 109.1 MB. Free memory was 61.7 MB in the beginning and 56.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:55:06,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 51.6 MB in the end (delta: 871.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.33 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 49.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.43 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 392.08 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 47.7 MB in the beginning and 58.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21660.12 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 57.9 MB in the beginning and 61.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.97 ms. Allocated memory is still 109.1 MB. Free memory was 61.7 MB in the beginning and 56.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 77]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1674 SDtfs, 1873 SDslu, 4718 SDs, 0 SdLazy, 1815 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 644 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 49 NumberOfFragments, 751 HoareAnnotationTreeSize, 14 FomulaSimplifications, 7528113 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38416 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 67978 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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...