./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 32adbfac5f3e3ea232180afd045da0027ca6d993 ..................................................................................................................................................................................................................................................................................................................... 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_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 32adbfac5f3e3ea232180afd045da0027ca6d993 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:29:41,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:29:41,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:29:41,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:29:41,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:29:41,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:29:41,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:29:41,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:29:41,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:29:41,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:29:41,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:29:41,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:29:41,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:29:41,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:29:41,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:29:41,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:29:41,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:29:41,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:29:41,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:29:41,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:29:41,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:29:41,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:29:41,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:29:41,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:29:41,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:29:41,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:29:41,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:29:41,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:29:41,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:29:41,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:29:41,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:29:41,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:29:41,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:29:41,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:29:41,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:29:41,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:29:41,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:29:41,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:29:41,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:29:41,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:29:41,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:29:41,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:29:41,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:29:41,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:29:41,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:29:41,816 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:29:41,817 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:29:41,817 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:29:41,817 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:29:41,817 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:29:41,817 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:29:41,818 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:29:41,819 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:29:41,819 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:29:41,819 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:29:41,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:29:41,820 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:29:41,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:29:41,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:29:41,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:29:41,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:29:41,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:29:41,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:29:41,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:29:41,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:29:41,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:29:41,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:29:41,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:29:41,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:29:41,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:29:41,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:29:41,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:29:41,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:29:41,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:29:41,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:29:41,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:29:41,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:29:41,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:29:41,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:29:41,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:29:41,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:29:41,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:29:41,828 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_476210b7-a852-41d9-9364-77db4a6de7f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-30 03:29:42,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:29:42,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:29:42,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:29:42,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:29:42,115 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:29:42,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 03:29:42,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/95b17147c/872577a8de7e46e5b7f8798e05e92533/FLAGfb8de8171 [2020-11-30 03:29:42,670 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:29:42,673 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 03:29:42,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/95b17147c/872577a8de7e46e5b7f8798e05e92533/FLAGfb8de8171 [2020-11-30 03:29:43,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/95b17147c/872577a8de7e46e5b7f8798e05e92533 [2020-11-30 03:29:43,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:29:43,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:29:43,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:29:43,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:29:43,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:29:43,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ffba79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43, skipping insertion in model container [2020-11-30 03:29:43,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:29:43,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:29:43,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:29:43,312 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:29:43,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:29:43,351 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:29:43,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43 WrapperNode [2020-11-30 03:29:43,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:29:43,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:29:43,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:29:43,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:29:43,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:29:43,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:29:43,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:29:43,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:29:43,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... [2020-11-30 03:29:43,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:29:43,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:29:43,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:29:43,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:29:43,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:29:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:29:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:29:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 03:29:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:29:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:29:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 03:29:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:29:44,815 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:29:44,816 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 03:29:44,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:44 BoogieIcfgContainer [2020-11-30 03:29:44,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:29:44,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:29:44,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:29:44,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:29:44,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:29:43" (1/3) ... [2020-11-30 03:29:44,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0c0dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:29:44, skipping insertion in model container [2020-11-30 03:29:44,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:43" (2/3) ... [2020-11-30 03:29:44,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0c0dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:29:44, skipping insertion in model container [2020-11-30 03:29:44,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:44" (3/3) ... [2020-11-30 03:29:44,825 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-30 03:29:44,836 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:29:44,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 03:29:44,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 03:29:44,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:29:44,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:29:44,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:29:44,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:29:44,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:29:44,889 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:29:44,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:29:44,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:29:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 03:29:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:29:44,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:44,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:44,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1159694680, now seen corresponding path program 1 times [2020-11-30 03:29:44,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:29:44,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089219645] [2020-11-30 03:29:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:29:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:45,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089219645] [2020-11-30 03:29:45,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:45,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:29:45,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96970015] [2020-11-30 03:29:45,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:29:45,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:29:45,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:29:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:29:45,095 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-30 03:29:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:45,111 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-11-30 03:29:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:29:45,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 03:29:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:45,120 INFO L225 Difference]: With dead ends: 36 [2020-11-30 03:29:45,120 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 03:29:45,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:29:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 03:29:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 03:29:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 03:29:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 03:29:45,152 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-11-30 03:29:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:45,152 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 03:29:45,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:29:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 03:29:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:29:45,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:45,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:45,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:29:45,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:45,155 INFO L82 PathProgramCache]: Analyzing trace with hash -744203932, now seen corresponding path program 1 times [2020-11-30 03:29:45,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:29:45,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972034981] [2020-11-30 03:29:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:29:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:29:45,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:29:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:29:45,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:29:45,412 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 03:29:45,412 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:29:45,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:29:45,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:29:45 BoogieIcfgContainer [2020-11-30 03:29:45,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:29:45,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:29:45,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:29:45,441 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:29:45,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:44" (3/4) ... [2020-11-30 03:29:45,445 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 03:29:45,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:29:45,447 INFO L168 Benchmark]: Toolchain (without parser) took 2408.22 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 74.8 MB in the beginning and 95.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:29:45,448 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:29:45,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.24 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 83.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:29:45,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.09 ms. Allocated memory is still 107.0 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:29:45,450 INFO L168 Benchmark]: Boogie Preprocessor took 31.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:29:45,451 INFO L168 Benchmark]: RCFGBuilder took 1391.36 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 59.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:29:45,451 INFO L168 Benchmark]: TraceAbstraction took 620.86 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.6 MB in the beginning and 96.4 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:29:45,452 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 130.0 MB. Free memory was 96.4 MB in the beginning and 95.6 MB in the end (delta: 825.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:29:45,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.24 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 83.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.09 ms. Allocated memory is still 107.0 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.04 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 79.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1391.36 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 59.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 620.86 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.6 MB in the beginning and 96.4 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 130.0 MB. Free memory was 96.4 MB in the beginning and 95.6 MB in the end (delta: 825.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1251.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, 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-a4ecdab [2020-11-30 03:29:47,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:29:47,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:29:47,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:29:47,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:29:47,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:29:47,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:29:47,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:29:47,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:29:47,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:29:47,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:29:47,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:29:47,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:29:47,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:29:47,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:29:47,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:29:47,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:29:47,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:29:47,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:29:47,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:29:47,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:29:47,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:29:47,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:29:47,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:29:47,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:29:47,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:29:47,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:29:47,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:29:47,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:29:47,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:29:47,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:29:47,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:29:47,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:29:47,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:29:47,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:29:48,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:29:48,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:29:48,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:29:48,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:29:48,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:29:48,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:29:48,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 03:29:48,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:29:48,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:29:48,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:29:48,050 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:29:48,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:29:48,051 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:29:48,051 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:29:48,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:29:48,051 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:29:48,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:29:48,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:29:48,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:29:48,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:29:48,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:29:48,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:29:48,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:29:48,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:29:48,055 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 03:29:48,055 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 03:29:48,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:29:48,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:29:48,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:29:48,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:29:48,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:29:48,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 03:29:48,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:29:48,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:29:48,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:29:48,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:29:48,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:29:48,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:29:48,058 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 03:29:48,072 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 03:29:48,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:29:48,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:29:48,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:29:48,073 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_476210b7-a852-41d9-9364-77db4a6de7f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-30 03:29:48,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:29:48,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:29:48,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:29:48,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:29:48,507 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:29:48,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 03:29:48,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/4f86df65c/534df742714544bebc5cb1c5fc979b09/FLAG3f8112eeb [2020-11-30 03:29:49,045 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:29:49,048 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 03:29:49,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/4f86df65c/534df742714544bebc5cb1c5fc979b09/FLAG3f8112eeb [2020-11-30 03:29:49,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/data/4f86df65c/534df742714544bebc5cb1c5fc979b09 [2020-11-30 03:29:49,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:29:49,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:29:49,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:29:49,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:29:49,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:29:49,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fcc975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49, skipping insertion in model container [2020-11-30 03:29:49,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:29:49,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:29:49,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:29:49,733 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:29:49,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:29:49,848 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:29:49,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49 WrapperNode [2020-11-30 03:29:49,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:29:49,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:29:49,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:29:49,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:29:49,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:29:49,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:29:49,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:29:49,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:29:49,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... [2020-11-30 03:29:49,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:29:49,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:29:49,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:29:49,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:29:49,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:29:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 03:29:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:29:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 03:29:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:29:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:29:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 03:29:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:29:50,639 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:29:50,639 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 03:29:50,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:50 BoogieIcfgContainer [2020-11-30 03:29:50,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:29:50,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:29:50,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:29:50,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:29:50,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:29:49" (1/3) ... [2020-11-30 03:29:50,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e335a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:29:50, skipping insertion in model container [2020-11-30 03:29:50,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:29:49" (2/3) ... [2020-11-30 03:29:50,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e335a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:29:50, skipping insertion in model container [2020-11-30 03:29:50,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:50" (3/3) ... [2020-11-30 03:29:50,670 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-30 03:29:50,681 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:29:50,685 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 03:29:50,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 03:29:50,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:29:50,736 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:29:50,736 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:29:50,736 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:29:50,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:29:50,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:29:50,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:29:50,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:29:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 03:29:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:29:50,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:50,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:50,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 03:29:50,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:50,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255359379] [2020-11-30 03:29:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:50,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 03:29:50,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:50,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:50,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255359379] [2020-11-30 03:29:50,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:50,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 03:29:50,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319533685] [2020-11-30 03:29:50,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:29:50,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:50,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:29:50,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:29:50,959 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-11-30 03:29:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:50,986 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-30 03:29:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:29:50,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 03:29:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:51,007 INFO L225 Difference]: With dead ends: 84 [2020-11-30 03:29:51,007 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 03:29:51,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:29:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 03:29:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 03:29:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 03:29:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-11-30 03:29:51,062 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-11-30 03:29:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:51,063 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-11-30 03:29:51,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:29:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-11-30 03:29:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 03:29:51,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:51,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:51,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 03:29:51,284 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-11-30 03:29:51,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:51,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510081808] [2020-11-30 03:29:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:51,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:29:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:51,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510081808] [2020-11-30 03:29:51,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:51,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 03:29:51,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536926264] [2020-11-30 03:29:51,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:29:51,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:29:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:29:51,452 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-11-30 03:29:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:51,521 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-11-30 03:29:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:29:51,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 03:29:51,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:51,523 INFO L225 Difference]: With dead ends: 82 [2020-11-30 03:29:51,523 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 03:29:51,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:29:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 03:29:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 03:29:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 03:29:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 03:29:51,531 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-11-30 03:29:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:51,532 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 03:29:51,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:29:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 03:29:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 03:29:51,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:51,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:51,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 03:29:51,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 03:29:51,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:51,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166647718] [2020-11-30 03:29:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:51,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:29:51,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:51,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:51,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166647718] [2020-11-30 03:29:51,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:51,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 03:29:51,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132703952] [2020-11-30 03:29:51,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:29:51,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:29:51,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:29:51,945 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-11-30 03:29:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:52,075 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-11-30 03:29:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:29:52,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 03:29:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:52,079 INFO L225 Difference]: With dead ends: 96 [2020-11-30 03:29:52,079 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 03:29:52,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:29:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 03:29:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-11-30 03:29:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 03:29:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 03:29:52,087 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 03:29:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:52,087 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 03:29:52,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:29:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 03:29:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 03:29:52,088 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:52,088 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] [2020-11-30 03:29:52,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 03:29:52,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 03:29:52,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:52,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744610736] [2020-11-30 03:29:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:52,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:29:52,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:52,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:52,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:52,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:52,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744610736] [2020-11-30 03:29:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 03:29:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631826245] [2020-11-30 03:29:52,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:29:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:29:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:29:52,618 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-11-30 03:29:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:53,207 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-11-30 03:29:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:29:53,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 03:29:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:53,210 INFO L225 Difference]: With dead ends: 149 [2020-11-30 03:29:53,210 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 03:29:53,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:29:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 03:29:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-11-30 03:29:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 03:29:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-11-30 03:29:53,224 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-11-30 03:29:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:53,225 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-11-30 03:29:53,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:29:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-11-30 03:29:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 03:29:53,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:53,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:29:53,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 03:29:53,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 03:29:53,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:53,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047254622] [2020-11-30 03:29:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:53,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:29:53,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:53,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:53,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:53,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:53,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:53,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047254622] [2020-11-30 03:29:53,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:53,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-30 03:29:53,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733063344] [2020-11-30 03:29:53,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 03:29:53,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 03:29:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:29:53,999 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-11-30 03:29:55,001 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 03:29:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:55,185 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-11-30 03:29:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 03:29:55,187 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-11-30 03:29:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:55,189 INFO L225 Difference]: With dead ends: 180 [2020-11-30 03:29:55,189 INFO L226 Difference]: Without dead ends: 178 [2020-11-30 03:29:55,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-11-30 03:29:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-30 03:29:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-11-30 03:29:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 03:29:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-11-30 03:29:55,209 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-11-30 03:29:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:55,210 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-11-30 03:29:55,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 03:29:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-11-30 03:29:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 03:29:55,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:55,211 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] [2020-11-30 03:29:55,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 03:29:55,429 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-11-30 03:29:55,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:55,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214019348] [2020-11-30 03:29:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:55,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:29:55,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:55,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:55,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:55,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:55,591 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:29:55,591 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:29:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214019348] [2020-11-30 03:29:55,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:55,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 03:29:55,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114184579] [2020-11-30 03:29:55,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 03:29:55,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:55,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 03:29:55,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 03:29:55,630 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-11-30 03:29:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:56,167 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-11-30 03:29:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 03:29:56,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 03:29:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:56,170 INFO L225 Difference]: With dead ends: 166 [2020-11-30 03:29:56,170 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 03:29:56,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:29:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 03:29:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-11-30 03:29:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 03:29:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-11-30 03:29:56,191 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-11-30 03:29:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:56,191 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-11-30 03:29:56,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 03:29:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-11-30 03:29:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 03:29:56,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:56,198 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] [2020-11-30 03:29:56,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 03:29:56,398 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:56,399 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-11-30 03:29:56,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:56,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088935979] [2020-11-30 03:29:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:56,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:29:56,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:56,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:56,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088935979] [2020-11-30 03:29:56,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:56,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 03:29:56,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091589017] [2020-11-30 03:29:56,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:29:56,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:56,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:29:56,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:29:56,523 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-11-30 03:29:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:56,615 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-11-30 03:29:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:29:56,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 03:29:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:56,620 INFO L225 Difference]: With dead ends: 157 [2020-11-30 03:29:56,620 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 03:29:56,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:29:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 03:29:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-11-30 03:29:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 03:29:56,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 03:29:56,634 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 03:29:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:56,634 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 03:29:56,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:29:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 03:29:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 03:29:56,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:56,636 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] [2020-11-30 03:29:56,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 03:29:56,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-11-30 03:29:56,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:56,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493550284] [2020-11-30 03:29:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 03:29:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:56,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 03:29:56,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:56,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:56,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493550284] [2020-11-30 03:29:56,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:56,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 03:29:56,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47636635] [2020-11-30 03:29:56,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:29:56,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:29:56,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:29:56,954 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-11-30 03:29:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:56,981 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-11-30 03:29:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:29:56,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 03:29:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:56,983 INFO L225 Difference]: With dead ends: 96 [2020-11-30 03:29:56,983 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 03:29:56,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:29:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 03:29:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-30 03:29:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 03:29:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 03:29:57,008 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 03:29:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:57,009 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 03:29:57,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:29:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 03:29:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 03:29:57,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:57,012 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] [2020-11-30 03:29:57,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 03:29:57,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-11-30 03:29:57,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:57,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053711313] [2020-11-30 03:29:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:29:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:57,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:29:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:57,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:57,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:57,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:57,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053711313] [2020-11-30 03:29:57,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:57,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 03:29:57,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500224026] [2020-11-30 03:29:57,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:29:57,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:29:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:29:57,511 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-11-30 03:29:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:57,892 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-11-30 03:29:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 03:29:57,892 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-30 03:29:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:57,893 INFO L225 Difference]: With dead ends: 131 [2020-11-30 03:29:57,894 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 03:29:57,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:29:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 03:29:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-11-30 03:29:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 03:29:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-11-30 03:29:57,903 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-11-30 03:29:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:57,904 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-11-30 03:29:57,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:29:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-11-30 03:29:57,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 03:29:57,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:57,905 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] [2020-11-30 03:29:58,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 03:29:58,118 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-11-30 03:29:58,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:58,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987500503] [2020-11-30 03:29:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:29:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:58,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 03:29:58,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:58,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:58,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:58,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987500503] [2020-11-30 03:29:58,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:58,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-11-30 03:29:58,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438288677] [2020-11-30 03:29:58,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 03:29:58,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:58,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 03:29:58,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-30 03:29:58,351 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-11-30 03:29:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:58,752 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-11-30 03:29:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 03:29:58,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-30 03:29:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:58,753 INFO L225 Difference]: With dead ends: 114 [2020-11-30 03:29:58,753 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 03:29:58,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-30 03:29:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 03:29:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-30 03:29:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 03:29:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-11-30 03:29:58,766 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-11-30 03:29:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:58,767 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-11-30 03:29:58,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 03:29:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-11-30 03:29:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 03:29:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:58,768 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] [2020-11-30 03:29:58,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 03:29:58,971 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:58,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:58,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-11-30 03:29:58,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:58,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621953215] [2020-11-30 03:29:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:29:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:59,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:29:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:59,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:59,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:59,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:29:59,162 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:29:59,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:29:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:59,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621953215] [2020-11-30 03:29:59,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:29:59,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 03:29:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615129983] [2020-11-30 03:29:59,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 03:29:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:29:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 03:29:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 03:29:59,215 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-11-30 03:29:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:29:59,507 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-30 03:29:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 03:29:59,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 03:29:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:29:59,508 INFO L225 Difference]: With dead ends: 84 [2020-11-30 03:29:59,508 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 03:29:59,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:29:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 03:29:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 03:29:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 03:29:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-11-30 03:29:59,514 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-11-30 03:29:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:29:59,515 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-11-30 03:29:59,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 03:29:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-11-30 03:29:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 03:29:59,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:29:59,515 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] [2020-11-30 03:29:59,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 03:29:59,726 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:29:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:29:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-11-30 03:29:59,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:29:59,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966121793] [2020-11-30 03:29:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:29:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:29:59,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:29:59,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:29:59,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:29:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:29:59,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:00,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966121793] [2020-11-30 03:30:00,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:00,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 03:30:00,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635760759] [2020-11-30 03:30:00,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:30:00,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:00,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:30:00,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:30:00,231 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-11-30 03:30:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:00,567 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-30 03:30:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:30:00,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-30 03:30:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:00,568 INFO L225 Difference]: With dead ends: 82 [2020-11-30 03:30:00,568 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 03:30:00,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:30:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 03:30:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 03:30:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 03:30:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-11-30 03:30:00,576 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-11-30 03:30:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:00,576 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-11-30 03:30:00,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:30:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-11-30 03:30:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 03:30:00,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:00,577 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] [2020-11-30 03:30:00,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 03:30:00,790 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:00,790 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-11-30 03:30:00,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:00,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825418559] [2020-11-30 03:30:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:30:00,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:00,992 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:01,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:01,280 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:30:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:01,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825418559] [2020-11-30 03:30:01,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:01,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-11-30 03:30:01,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004570864] [2020-11-30 03:30:01,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 03:30:01,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 03:30:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-30 03:30:01,429 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-11-30 03:30:02,447 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 03:30:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:03,311 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-30 03:30:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 03:30:03,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-11-30 03:30:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:03,313 INFO L225 Difference]: With dead ends: 154 [2020-11-30 03:30:03,313 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 03:30:03,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-11-30 03:30:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 03:30:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-11-30 03:30:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 03:30:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-11-30 03:30:03,321 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-11-30 03:30:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-11-30 03:30:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 03:30:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-11-30 03:30:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 03:30:03,322 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:03,322 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] [2020-11-30 03:30:03,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 03:30:03,534 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-11-30 03:30:03,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:03,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25220022] [2020-11-30 03:30:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 03:30:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:03,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:03,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:03,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:04,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:04,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25220022] [2020-11-30 03:30:04,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:04,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-11-30 03:30:04,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025504333] [2020-11-30 03:30:04,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 03:30:04,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 03:30:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:30:04,289 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-11-30 03:30:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:06,663 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-11-30 03:30:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 03:30:06,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-30 03:30:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:06,665 INFO L225 Difference]: With dead ends: 195 [2020-11-30 03:30:06,665 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 03:30:06,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 03:30:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 03:30:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-11-30 03:30:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 03:30:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-11-30 03:30:06,673 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-11-30 03:30:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:06,673 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-11-30 03:30:06,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 03:30:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-11-30 03:30:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 03:30:06,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:06,674 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] [2020-11-30 03:30:06,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 03:30:06,875 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-11-30 03:30:06,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:06,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964951349] [2020-11-30 03:30:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:06,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 03:30:06,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:06,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:07,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:07,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964951349] [2020-11-30 03:30:07,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:07,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-11-30 03:30:07,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092281892] [2020-11-30 03:30:07,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 03:30:07,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 03:30:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:30:07,401 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-11-30 03:30:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:08,538 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-11-30 03:30:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 03:30:08,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-30 03:30:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:08,539 INFO L225 Difference]: With dead ends: 125 [2020-11-30 03:30:08,539 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 03:30:08,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-11-30 03:30:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 03:30:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-11-30 03:30:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 03:30:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-30 03:30:08,545 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-11-30 03:30:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:08,545 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-30 03:30:08,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 03:30:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-30 03:30:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 03:30:08,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:08,546 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] [2020-11-30 03:30:08,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 03:30:08,756 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-11-30 03:30:08,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:08,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663722603] [2020-11-30 03:30:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:08,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:30:08,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:08,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:08,929 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:08,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:09,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663722603] [2020-11-30 03:30:09,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:09,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 03:30:09,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416024200] [2020-11-30 03:30:09,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:30:09,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:30:09,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:30:09,220 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-11-30 03:30:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:09,952 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 03:30:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 03:30:09,953 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-30 03:30:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:09,953 INFO L225 Difference]: With dead ends: 52 [2020-11-30 03:30:09,953 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 03:30:09,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:30:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 03:30:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 03:30:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 03:30:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-30 03:30:09,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-11-30 03:30:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:09,959 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-30 03:30:09,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:30:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-11-30 03:30:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 03:30:09,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:09,960 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] [2020-11-30 03:30:10,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 03:30:10,170 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:10,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-11-30 03:30:10,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:10,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940947960] [2020-11-30 03:30:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:10,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:30:10,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:10,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:10,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:10,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:10,386 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-11-30 03:30:10,386 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:30:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:10,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940947960] [2020-11-30 03:30:10,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:10,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-30 03:30:10,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236228218] [2020-11-30 03:30:10,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 03:30:10,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 03:30:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:30:10,500 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-11-30 03:30:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:11,095 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-30 03:30:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:30:11,096 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-11-30 03:30:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:11,097 INFO L225 Difference]: With dead ends: 55 [2020-11-30 03:30:11,097 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 03:30:11,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-11-30 03:30:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 03:30:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 03:30:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 03:30:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-30 03:30:11,101 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-11-30 03:30:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:11,101 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-30 03:30:11,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 03:30:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-30 03:30:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 03:30:11,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:11,102 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] [2020-11-30 03:30:11,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 03:30:11,302 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-11-30 03:30:11,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:11,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395624777] [2020-11-30 03:30:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:11,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 03:30:11,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:11,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:30:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:11,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:11,575 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:30:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:11,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395624777] [2020-11-30 03:30:11,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:11,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 03:30:11,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709161891] [2020-11-30 03:30:11,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 03:30:11,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 03:30:11,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:30:11,637 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-11-30 03:30:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:12,220 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-30 03:30:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 03:30:12,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-30 03:30:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:12,221 INFO L225 Difference]: With dead ends: 79 [2020-11-30 03:30:12,221 INFO L226 Difference]: Without dead ends: 61 [2020-11-30 03:30:12,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-30 03:30:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-30 03:30:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-11-30 03:30:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 03:30:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-30 03:30:12,226 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-11-30 03:30:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:12,226 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-30 03:30:12,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 03:30:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-30 03:30:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 03:30:12,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:30:12,227 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] [2020-11-30 03:30:12,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-30 03:30:12,428 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:30:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:30:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-11-30 03:30:12,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:30:12,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248706428] [2020-11-30 03:30:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/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 [2020-11-30 03:30:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:30:12,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:30:12,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:30:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:12,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:30:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:30:12,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248706428] [2020-11-30 03:30:12,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:30:12,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 03:30:12,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226090301] [2020-11-30 03:30:12,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:30:12,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:30:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:30:12,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:30:12,535 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-11-30 03:30:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:30:12,565 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-30 03:30:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:30:12,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-30 03:30:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:30:12,565 INFO L225 Difference]: With dead ends: 39 [2020-11-30 03:30:12,565 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:30:12,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:30:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:30:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:30:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:30:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:30:12,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-30 03:30:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:30:12,566 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:30:12,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:30:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:30:12,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:30:12,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-30 03:30:12,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:30:13,020 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 119 [2020-11-30 03:30:13,137 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2020-11-30 03:30:13,263 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 110 [2020-11-30 03:30:14,240 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 39 [2020-11-30 03:30:14,953 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2020-11-30 03:30:15,284 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-11-30 03:30:15,889 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 33 [2020-11-30 03:30:16,717 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-11-30 03:30:17,560 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-11-30 03:30:18,264 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2020-11-30 03:30:19,529 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2020-11-30 03:30:19,754 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L69-2(line 69) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,812 INFO L274 CegarLoopResult]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L274 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2020-11-30 03:30:19,813 INFO L270 CegarLoopResult]: At program point L53-3(lines 45 54) the Hoare annotation is: (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))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmax_float_~y .cse1) .cse2) (and (not (fp.eq .cse1 .cse1)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L277 CegarLoopResult]: At program point L87(lines 59 88) the Hoare annotation is: true [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-11-30 03:30:19,814 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57(line 57) 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)))) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-1(line 57) 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))) [2020-11-30 03:30:19,815 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-2(line 57) 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))) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-3(line 57) 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)) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.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))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_fmax_float_~y .cse3) .cse2))) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short24| .cse1 (= ULTIMATE.start_fmax_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))) .cse2) (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-6(line 57) the Hoare annotation is: (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (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)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) [2020-11-30 03:30:19,815 INFO L270 CegarLoopResult]: At program point L57-7(line 57) 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))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) [2020-11-30 03:30:19,815 INFO L274 CegarLoopResult]: For program point L33(lines 33 42) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1)) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse0))) [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L270 CegarLoopResult]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-30 03:30:19,816 INFO L270 CegarLoopResult]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (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_fmax_float_~x .cse1) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) (fp.eq .cse1 .cse1) .cse0)))) [2020-11-30 03:30:19,816 INFO L270 CegarLoopResult]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse2 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_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_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not .cse0) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 .cse2 .cse3))) [2020-11-30 03:30:19,816 INFO L274 CegarLoopResult]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2020-11-30 03:30:19,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:30:19 BoogieIcfgContainer [2020-11-30 03:30:19,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:30:19,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:30:19,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:30:19,847 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:30:19,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:29:50" (3/4) ... [2020-11-30 03:30:19,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:30:19,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-30 03:30:19,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 03:30:19,864 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:30:19,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:30:19,900 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-11-30 03:30:19,900 WARN L221 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) [2020-11-30 03:30:19,901 WARN L221 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)) [2020-11-30 03:30:19,901 WARN L221 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) [2020-11-30 03:30:19,901 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) [2020-11-30 03:30:19,902 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && 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]))) && y == y) [2020-11-30 03:30:19,902 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~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)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-30 03:30:19,902 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) [2020-11-30 03:30:19,903 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \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])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) [2020-11-30 03:30:19,903 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-30 03:30:19,904 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-30 03:30:19,904 WARN L221 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)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) [2020-11-30 03:30:19,904 WARN L221 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)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y [2020-11-30 03:30:19,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_476210b7-a852-41d9-9364-77db4a6de7f6/bin/utaipan/witness.graphml [2020-11-30 03:30:19,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:30:19,938 INFO L168 Benchmark]: Toolchain (without parser) took 30496.85 ms. Allocated memory was 56.6 MB in the beginning and 130.0 MB in the end (delta: 73.4 MB). Free memory was 35.5 MB in the beginning and 101.4 MB in the end (delta: -66.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,939 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:30:19,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.46 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 38.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.48 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:30:19,939 INFO L168 Benchmark]: Boogie Preprocessor took 65.60 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,940 INFO L168 Benchmark]: RCFGBuilder took 678.23 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 25.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,940 INFO L168 Benchmark]: TraceAbstraction took 29186.86 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 55.6 MB in the beginning and 106.7 MB in the end (delta: -51.1 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,940 INFO L168 Benchmark]: Witness Printer took 90.73 ms. Allocated memory is still 130.0 MB. Free memory was 106.7 MB in the beginning and 101.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 03:30:19,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.46 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 38.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.48 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.60 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 34.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 678.23 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 25.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29186.86 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 55.6 MB in the beginning and 106.7 MB in the end (delta: -51.1 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. * Witness Printer took 90.73 ms. Allocated memory is still 130.0 MB. Free memory was 106.7 MB in the beginning and 101.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~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)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 57]: 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)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y - InvariantResult [Line: 57]: 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)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && 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]))) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \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])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: 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: 57]: 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)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) - InvariantResult [Line: 57]: 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: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1986 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 626146 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38333 FormulaSimplificationTreeSizeReductionInter, 6.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95765 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...