./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8039b1e35b9e459b273890fa707790cd9b2d1812 ................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8039b1e35b9e459b273890fa707790cd9b2d1812 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:02:15,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:02:15,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:02:15,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:02:15,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:02:15,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:02:15,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:02:15,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:02:15,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:02:15,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:02:15,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:02:15,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:02:15,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:02:15,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:02:15,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:02:15,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:02:15,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:02:15,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:02:15,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:02:15,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:02:15,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:02:15,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:02:15,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:02:15,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:02:15,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:02:15,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:02:15,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:02:15,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:02:15,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:02:15,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:02:15,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:02:15,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:02:15,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:02:15,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:02:15,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:02:15,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:02:15,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:02:15,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:02:15,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:02:15,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:02:15,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:02:15,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:02:16,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:02:16,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:02:16,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:02:16,034 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:02:16,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:02:16,035 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:02:16,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:02:16,035 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:02:16,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:02:16,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:02:16,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:02:16,037 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:02:16,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:02:16,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:02:16,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:02:16,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:02:16,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:02:16,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:02:16,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:02:16,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:02:16,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:02:16,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:02:16,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:02:16,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:02:16,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:02:16,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:02:16,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:02:16,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:02:16,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:02:16,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:02:16,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:02:16,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:16,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:02:16,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:02:16,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:02:16,044 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:02:16,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:02:16,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:02:16,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:02:16,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:02:16,045 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_2a965f88-d3ad-469d-af9e-d81145fefbfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-11-30 02:02:16,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:02:16,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:02:16,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:02:16,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:02:16,417 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:02:16,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 02:02:16,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/5dff98149/2f84d220904545c18c1cc0754d03a310/FLAG17b416cd1 [2020-11-30 02:02:17,031 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:02:17,034 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 02:02:17,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/5dff98149/2f84d220904545c18c1cc0754d03a310/FLAG17b416cd1 [2020-11-30 02:02:17,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/5dff98149/2f84d220904545c18c1cc0754d03a310 [2020-11-30 02:02:17,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:02:17,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:02:17,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:17,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:02:17,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:02:17,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61936c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17, skipping insertion in model container [2020-11-30 02:02:17,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:02:17,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:02:17,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:17,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:02:17,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:17,677 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:02:17,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17 WrapperNode [2020-11-30 02:02:17,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:17,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:17,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:02:17,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:02:17,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:17,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:02:17,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:02:17,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:02:17,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... [2020-11-30 02:02:17,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:02:17,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:02:17,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:02:17,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:02:17,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:02:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:02:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:02:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:02:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:02:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:02:19,068 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:02:19,068 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 02:02:19,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:19 BoogieIcfgContainer [2020-11-30 02:02:19,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:02:19,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:02:19,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:02:19,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:02:19,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:02:17" (1/3) ... [2020-11-30 02:02:19,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a4603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:19, skipping insertion in model container [2020-11-30 02:02:19,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:17" (2/3) ... [2020-11-30 02:02:19,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a4603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:19, skipping insertion in model container [2020-11-30 02:02:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:19" (3/3) ... [2020-11-30 02:02:19,082 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-11-30 02:02:19,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:02:19,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:02:19,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:02:19,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:02:19,144 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:02:19,144 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:02:19,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:02:19,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:02:19,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:02:19,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:02:19,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:02:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-30 02:02:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:02:19,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:19,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:19,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 350351898, now seen corresponding path program 1 times [2020-11-30 02:02:19,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:19,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977507162] [2020-11-30 02:02:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:19,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977507162] [2020-11-30 02:02:19,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:19,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:02:19,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158461470] [2020-11-30 02:02:19,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:02:19,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:02:19,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:02:19,354 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-30 02:02:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:19,370 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2020-11-30 02:02:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:02:19,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 02:02:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:19,378 INFO L225 Difference]: With dead ends: 36 [2020-11-30 02:02:19,378 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:02:19,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:02:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:02:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:02:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:02:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 02:02:19,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-11-30 02:02:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:19,411 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 02:02:19,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:02:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 02:02:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:02:19,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:19,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:19,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:02:19,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:19,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:19,413 INFO L82 PathProgramCache]: Analyzing trace with hash -64141718, now seen corresponding path program 1 times [2020-11-30 02:02:19,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:19,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872226057] [2020-11-30 02:02:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:02:19,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:02:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:02:19,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:02:19,664 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:02:19,665 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:02:19,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:02:19,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:02:19 BoogieIcfgContainer [2020-11-30 02:02:19,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:02:19,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:02:19,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:02:19,701 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:02:19,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:19" (3/4) ... [2020-11-30 02:02:19,705 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:02:19,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:02:19,707 INFO L168 Benchmark]: Toolchain (without parser) took 2324.68 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 53.4 MB in the beginning and 55.7 MB in the end (delta: -2.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:02:19,708 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:02:19,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.13 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 53.2 MB in the beginning and 89.0 MB in the end (delta: -35.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:02:19,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.86 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 86.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:02:19,711 INFO L168 Benchmark]: Boogie Preprocessor took 31.56 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 85.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:02:19,711 INFO L168 Benchmark]: RCFGBuilder took 1314.34 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 85.8 MB in the end (delta: -586.6 kB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:02:19,712 INFO L168 Benchmark]: TraceAbstraction took 627.83 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 55.7 MB in the end (delta: 30.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:02:19,712 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 113.2 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:02:19,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.13 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 53.2 MB in the beginning and 89.0 MB in the end (delta: -35.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.86 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 86.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.56 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 85.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1314.34 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 85.8 MB in the end (delta: -586.6 kB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 627.83 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 55.7 MB in the end (delta: 30.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.51 ms. Allocated memory is still 113.2 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1231.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 02:02:22,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:02:22,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:02:22,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:02:22,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:02:22,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:02:22,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:02:22,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:02:22,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:02:22,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:02:22,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:02:22,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:02:22,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:02:22,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:02:22,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:02:22,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:02:22,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:02:22,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:02:22,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:02:22,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:02:22,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:02:22,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:02:22,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:02:22,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:02:22,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:02:22,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:02:22,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:02:22,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:02:22,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:02:22,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:02:22,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:02:22,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:02:22,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:02:22,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:02:22,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:02:22,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:02:22,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:02:22,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:02:22,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:02:22,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:02:22,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:02:22,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:02:22,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:02:22,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:02:22,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:02:22,454 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:02:22,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:02:22,455 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:02:22,455 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:02:22,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:02:22,455 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:02:22,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:02:22,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:02:22,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:02:22,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:02:22,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:02:22,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:02:22,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:02:22,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:02:22,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:02:22,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:02:22,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:02:22,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:02:22,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:02:22,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:02:22,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:02:22,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:02:22,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:02:22,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:02:22,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:22,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:02:22,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:02:22,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:02:22,462 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:02:22,462 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:02:22,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:02:22,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:02:22,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:02:22,463 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_2a965f88-d3ad-469d-af9e-d81145fefbfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-11-30 02:02:22,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:02:22,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:02:22,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:02:22,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:02:22,924 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:02:22,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 02:02:22,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/1f775f42c/6e22adcf549b428d9eb80788876d90ae/FLAG5ede75d41 [2020-11-30 02:02:23,529 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:02:23,534 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 02:02:23,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/1f775f42c/6e22adcf549b428d9eb80788876d90ae/FLAG5ede75d41 [2020-11-30 02:02:23,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/data/1f775f42c/6e22adcf549b428d9eb80788876d90ae [2020-11-30 02:02:23,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:02:23,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:02:23,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:23,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:02:23,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:02:23,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:23" (1/1) ... [2020-11-30 02:02:23,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca1a498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:23, skipping insertion in model container [2020-11-30 02:02:23,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:23" (1/1) ... [2020-11-30 02:02:23,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:02:23,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:02:24,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:24,180 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:02:24,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:24,229 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:02:24,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24 WrapperNode [2020-11-30 02:02:24,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:24,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:24,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:02:24,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:02:24,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:24,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:02:24,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:02:24,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:02:24,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... [2020-11-30 02:02:24,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:02:24,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:02:24,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:02:24,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:02:24,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:02:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:02:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:02:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:02:24,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:02:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:02:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:02:25,172 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:02:25,173 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 02:02:25,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:25 BoogieIcfgContainer [2020-11-30 02:02:25,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:02:25,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:02:25,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:02:25,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:02:25,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:02:23" (1/3) ... [2020-11-30 02:02:25,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:25, skipping insertion in model container [2020-11-30 02:02:25,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:24" (2/3) ... [2020-11-30 02:02:25,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3d52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:25, skipping insertion in model container [2020-11-30 02:02:25,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:25" (3/3) ... [2020-11-30 02:02:25,184 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-11-30 02:02:25,196 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:02:25,201 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:02:25,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:02:25,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:02:25,236 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:02:25,236 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:02:25,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:02:25,236 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:02:25,236 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:02:25,236 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:02:25,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:02:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 02:02:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:02:25,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:25,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:25,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 02:02:25,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:25,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998559592] [2020-11-30 02:02:25,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:25,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:02:25,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:25,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:25,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998559592] [2020-11-30 02:02:25,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:25,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:02:25,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357732881] [2020-11-30 02:02:25,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:02:25,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:25,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:02:25,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:02:25,433 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-11-30 02:02:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:25,455 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-30 02:02:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:02:25,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 02:02:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:25,475 INFO L225 Difference]: With dead ends: 84 [2020-11-30 02:02:25,475 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 02:02:25,478 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 02:02:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 02:02:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 02:02:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 02:02:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-11-30 02:02:25,526 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-11-30 02:02:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:25,527 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-11-30 02:02:25,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:02:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-11-30 02:02:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:02:25,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:25,530 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 02:02:25,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:02:25,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-11-30 02:02:25,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:25,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822004985] [2020-11-30 02:02:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:25,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:02:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:26,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:26,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822004985] [2020-11-30 02:02:26,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:26,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 02:02:26,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166696336] [2020-11-30 02:02:26,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:26,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:26,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:26,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:26,009 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-11-30 02:02:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:26,095 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-11-30 02:02:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:26,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 02:02:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:26,097 INFO L225 Difference]: With dead ends: 82 [2020-11-30 02:02:26,097 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 02:02:26,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 02:02:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 02:02:26,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 02:02:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 02:02:26,115 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-11-30 02:02:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:26,117 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 02:02:26,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 02:02:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:02:26,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:26,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:02:26,333 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 02:02:26,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:26,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473524179] [2020-11-30 02:02:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:26,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:02:26,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:26,440 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 02:02:26,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:26,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473524179] [2020-11-30 02:02:26,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:26,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:02:26,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773426242] [2020-11-30 02:02:26,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:02:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:02:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:26,473 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-11-30 02:02:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:26,621 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-11-30 02:02:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:02:26,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 02:02:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:26,624 INFO L225 Difference]: With dead ends: 96 [2020-11-30 02:02:26,625 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 02:02:26,626 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 02:02:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 02:02:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-11-30 02:02:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 02:02:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 02:02:26,645 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 02:02:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:26,645 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 02:02:26,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:02:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 02:02:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:02:26,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:26,647 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 02:02:26,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:02:26,854 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 02:02:26,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434257992] [2020-11-30 02:02:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:26,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:27,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:27,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:27,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:27,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434257992] [2020-11-30 02:02:27,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:27,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 02:02:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183316146] [2020-11-30 02:02:27,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:02:27,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:27,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:02:27,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:02:27,176 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-11-30 02:02:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:27,754 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-11-30 02:02:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:02:27,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 02:02:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:27,756 INFO L225 Difference]: With dead ends: 149 [2020-11-30 02:02:27,756 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 02:02:27,757 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 02:02:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 02:02:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-11-30 02:02:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 02:02:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-11-30 02:02:27,770 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-11-30 02:02:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:27,771 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-11-30 02:02:27,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:02:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-11-30 02:02:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:02:27,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:27,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:27,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:02:27,991 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 02:02:27,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:27,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520365989] [2020-11-30 02:02:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:28,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:28,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:28,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:28,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:28,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:28,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:28,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520365989] [2020-11-30 02:02:28,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:28,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-30 02:02:28,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478079464] [2020-11-30 02:02:28,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 02:02:28,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 02:02:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:02:28,545 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-11-30 02:02:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:30,220 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-11-30 02:02:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 02:02:30,224 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-11-30 02:02:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:30,225 INFO L225 Difference]: With dead ends: 180 [2020-11-30 02:02:30,226 INFO L226 Difference]: Without dead ends: 178 [2020-11-30 02:02:30,227 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 02:02:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-30 02:02:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-11-30 02:02:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 02:02:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-11-30 02:02:30,241 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-11-30 02:02:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:30,242 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-11-30 02:02:30,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 02:02:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-11-30 02:02:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:02:30,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:30,243 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 02:02:30,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:02:30,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-11-30 02:02:30,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:30,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997752667] [2020-11-30 02:02:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:30,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:30,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:30,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:30,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:30,671 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:02:30,672 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:02:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:30,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997752667] [2020-11-30 02:02:30,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:30,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 02:02:30,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828509474] [2020-11-30 02:02:30,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:02:30,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:30,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:02:30,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:02:30,734 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-11-30 02:02:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:31,441 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-11-30 02:02:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:02:31,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 02:02:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:31,443 INFO L225 Difference]: With dead ends: 166 [2020-11-30 02:02:31,443 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 02:02:31,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:02:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 02:02:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-11-30 02:02:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 02:02:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-11-30 02:02:31,474 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-11-30 02:02:31,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:31,475 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-11-30 02:02:31,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:02:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-11-30 02:02:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:02:31,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:31,480 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 02:02:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:02:31,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-11-30 02:02:31,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:31,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680977525] [2020-11-30 02:02:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:02:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:31,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680977525] [2020-11-30 02:02:31,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:31,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:02:31,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233875937] [2020-11-30 02:02:31,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:02:31,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:31,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:02:31,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:31,839 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-11-30 02:02:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:31,930 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-11-30 02:02:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:02:31,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 02:02:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:31,932 INFO L225 Difference]: With dead ends: 157 [2020-11-30 02:02:31,932 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 02:02:31,933 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 02:02:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 02:02:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-11-30 02:02:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 02:02:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 02:02:31,946 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 02:02:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:31,946 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 02:02:31,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:02:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 02:02:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 02:02:31,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:31,948 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 02:02:32,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:02:32,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-11-30 02:02:32,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:32,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237396923] [2020-11-30 02:02:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:02:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:32,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:02:32,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:32,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:32,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237396923] [2020-11-30 02:02:32,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:32,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:02:32,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266190462] [2020-11-30 02:02:32,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:02:32,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:32,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:02:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:02:32,287 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-11-30 02:02:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:34,427 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-11-30 02:02:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:02:34,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 02:02:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:34,428 INFO L225 Difference]: With dead ends: 96 [2020-11-30 02:02:34,428 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 02:02:34,429 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 02:02:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 02:02:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-30 02:02:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 02:02:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 02:02:34,447 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 02:02:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:34,447 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 02:02:34,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:02:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 02:02:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:02:34,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:34,449 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 02:02:34,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:02:34,650 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-11-30 02:02:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:34,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407382041] [2020-11-30 02:02:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:34,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:34,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:34,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:34,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:34,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:34,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407382041] [2020-11-30 02:02:34,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:34,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 02:02:34,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853896113] [2020-11-30 02:02:34,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:02:34,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:34,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:02:34,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:02:34,966 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-11-30 02:02:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:35,503 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-11-30 02:02:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:02:35,503 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-30 02:02:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:35,505 INFO L225 Difference]: With dead ends: 131 [2020-11-30 02:02:35,505 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 02:02:35,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:02:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 02:02:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-11-30 02:02:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 02:02:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-11-30 02:02:35,524 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-11-30 02:02:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:35,524 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-11-30 02:02:35,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:02:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-11-30 02:02:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:02:35,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:35,533 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 02:02:35,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 02:02:35,735 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-11-30 02:02:35,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:35,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162072727] [2020-11-30 02:02:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 02:02:35,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:35,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:35,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:35,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:36,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162072727] [2020-11-30 02:02:36,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:36,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-11-30 02:02:36,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877435236] [2020-11-30 02:02:36,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 02:02:36,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 02:02:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:02:36,068 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-11-30 02:02:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:36,665 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-11-30 02:02:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:02:36,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-30 02:02:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:36,667 INFO L225 Difference]: With dead ends: 114 [2020-11-30 02:02:36,667 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 02:02:36,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-30 02:02:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 02:02:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-30 02:02:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 02:02:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-11-30 02:02:36,675 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-11-30 02:02:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:36,675 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-11-30 02:02:36,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 02:02:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-11-30 02:02:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:02:36,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:36,676 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 02:02:36,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 02:02:36,877 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:36,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-11-30 02:02:36,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:36,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217318538] [2020-11-30 02:02:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:36,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:36,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:36,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:37,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:37,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:37,047 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:02:37,047 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:02:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:37,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217318538] [2020-11-30 02:02:37,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:37,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 02:02:37,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009982826] [2020-11-30 02:02:37,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:02:37,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:37,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:02:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:02:37,090 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-11-30 02:02:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:37,518 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-30 02:02:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:02:37,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 02:02:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:37,523 INFO L225 Difference]: With dead ends: 84 [2020-11-30 02:02:37,523 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 02:02:37,524 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 02:02:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 02:02:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 02:02:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:02:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-11-30 02:02:37,533 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-11-30 02:02:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:37,534 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-11-30 02:02:37,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:02:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-11-30 02:02:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:02:37,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:37,535 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 02:02:37,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 02:02:37,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-11-30 02:02:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:37,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28627307] [2020-11-30 02:02:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:37,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:02:37,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:37,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:37,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:38,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28627307] [2020-11-30 02:02:38,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:38,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 02:02:38,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125859286] [2020-11-30 02:02:38,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:02:38,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:02:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:02:38,275 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-11-30 02:02:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:38,710 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-30 02:02:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:02:38,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-30 02:02:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:38,712 INFO L225 Difference]: With dead ends: 82 [2020-11-30 02:02:38,712 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 02:02:38,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:02:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 02:02:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 02:02:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:02:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-11-30 02:02:38,719 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-11-30 02:02:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:38,719 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-11-30 02:02:38,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:02:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-11-30 02:02:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:02:38,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:38,720 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 02:02:38,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 02:02:38,920 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-11-30 02:02:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:38,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144197417] [2020-11-30 02:02:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:39,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:02:39,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:39,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:39,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:39,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:02:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:39,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144197417] [2020-11-30 02:02:39,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:39,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-11-30 02:02:39,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437660341] [2020-11-30 02:02:39,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 02:02:39,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:39,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 02:02:39,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:02:39,699 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-11-30 02:02:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:41,119 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-30 02:02:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 02:02:41,120 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-11-30 02:02:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:41,121 INFO L225 Difference]: With dead ends: 154 [2020-11-30 02:02:41,121 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 02:02:41,122 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 02:02:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 02:02:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-11-30 02:02:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 02:02:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-11-30 02:02:41,132 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-11-30 02:02:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:41,132 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-11-30 02:02:41,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 02:02:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-11-30 02:02:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 02:02:41,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:41,133 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 02:02:41,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 02:02:41,356 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:41,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-11-30 02:02:41,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:41,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575889894] [2020-11-30 02:02:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:41,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 02:02:41,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:41,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:41,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:41,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:41,972 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-30 02:02:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:41,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:42,277 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 02:02:42,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575889894] [2020-11-30 02:02:42,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:42,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-11-30 02:02:42,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361601597] [2020-11-30 02:02:42,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 02:02:42,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:42,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 02:02:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:02:42,279 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-11-30 02:02:43,799 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-30 02:02:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:44,882 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-11-30 02:02:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 02:02:44,883 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-30 02:02:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:44,884 INFO L225 Difference]: With dead ends: 195 [2020-11-30 02:02:44,884 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 02:02:44,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 02:02:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 02:02:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-11-30 02:02:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 02:02:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-11-30 02:02:44,892 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-11-30 02:02:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:44,893 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-11-30 02:02:44,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 02:02:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-11-30 02:02:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 02:02:44,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:44,893 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 02:02:45,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 02:02:45,094 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-11-30 02:02:45,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:45,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384854335] [2020-11-30 02:02:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:45,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 02:02:45,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:45,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:45,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:45,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384854335] [2020-11-30 02:02:45,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:45,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-11-30 02:02:45,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23526533] [2020-11-30 02:02:45,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:02:45,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:02:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:02:45,618 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-11-30 02:02:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:46,788 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-11-30 02:02:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 02:02:46,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-30 02:02:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:46,789 INFO L225 Difference]: With dead ends: 125 [2020-11-30 02:02:46,790 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 02:02:46,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-11-30 02:02:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 02:02:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-11-30 02:02:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 02:02:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-30 02:02:46,796 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-11-30 02:02:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:46,796 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-30 02:02:46,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:02:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-30 02:02:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 02:02:46,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:46,797 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 02:02:47,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 02:02:47,007 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:47,007 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-11-30 02:02:47,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:47,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586643450] [2020-11-30 02:02:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:47,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:02:47,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:47,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:47,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:47,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:47,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586643450] [2020-11-30 02:02:47,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:47,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 02:02:47,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453028447] [2020-11-30 02:02:47,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:02:47,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:02:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:02:47,475 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-11-30 02:02:47,718 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 02:02:47,993 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 02:02:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:48,400 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 02:02:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:02:48,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-30 02:02:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:48,402 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:02:48,402 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 02:02:48,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:02:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 02:02:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 02:02:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 02:02:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-30 02:02:48,409 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-11-30 02:02:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:48,409 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-30 02:02:48,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:02:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-11-30 02:02:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 02:02:48,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:48,412 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 02:02:48,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 02:02:48,612 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:48,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-11-30 02:02:48,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:48,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185638038] [2020-11-30 02:02:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:48,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:02:48,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:48,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:48,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:48,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:48,919 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-11-30 02:02:48,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:02:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185638038] [2020-11-30 02:02:49,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:49,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-30 02:02:49,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761010161] [2020-11-30 02:02:49,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 02:02:49,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 02:02:49,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:02:49,154 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-11-30 02:02:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:52,232 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-30 02:02:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:02:52,233 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-11-30 02:02:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:52,233 INFO L225 Difference]: With dead ends: 55 [2020-11-30 02:02:52,233 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 02:02:52,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:02:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 02:02:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 02:02:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 02:02:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-30 02:02:52,239 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-11-30 02:02:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:52,240 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-30 02:02:52,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 02:02:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-30 02:02:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 02:02:52,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:52,240 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 02:02:52,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 02:02:52,451 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:52,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:52,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-11-30 02:02:52,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:52,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375859592] [2020-11-30 02:02:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:02:52,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:52,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:02:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:52,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:52,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:02:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:52,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375859592] [2020-11-30 02:02:52,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:52,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 02:02:52,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640853443] [2020-11-30 02:02:52,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:02:52,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:02:52,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:02:52,974 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-11-30 02:02:53,236 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-30 02:02:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:53,955 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-30 02:02:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:02:53,956 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-30 02:02:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:53,956 INFO L225 Difference]: With dead ends: 79 [2020-11-30 02:02:53,956 INFO L226 Difference]: Without dead ends: 61 [2020-11-30 02:02:53,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-30 02:02:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-30 02:02:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-11-30 02:02:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 02:02:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-30 02:02:53,963 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-11-30 02:02:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:53,964 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-30 02:02:53,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:02:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-30 02:02:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 02:02:53,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:53,964 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 02:02:54,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-30 02:02:54,177 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-11-30 02:02:54,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:02:54,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472943575] [2020-11-30 02:02:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/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 02:02:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:02:54,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:02:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:54,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:02:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:02:54,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472943575] [2020-11-30 02:02:54,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:54,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 02:02:54,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080364505] [2020-11-30 02:02:54,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:54,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:02:54,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:54,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:54,356 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-11-30 02:02:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:54,388 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-30 02:02:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:02:54,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-30 02:02:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:54,389 INFO L225 Difference]: With dead ends: 39 [2020-11-30 02:02:54,389 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:02:54,389 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 02:02:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:02:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:02:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:02:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:02:54,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-30 02:02:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:54,390 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:02:54,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:02:54,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:02:54,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-30 02:02:54,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:02:54,723 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-30 02:02:54,991 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 122 [2020-11-30 02:02:55,179 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2020-11-30 02:02:55,328 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 121 [2020-11-30 02:02:55,491 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 112 [2020-11-30 02:02:55,630 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 120 [2020-11-30 02:02:55,959 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-11-30 02:02:58,427 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 122 DAG size of output: 39 [2020-11-30 02:02:59,318 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 27 [2020-11-30 02:02:59,884 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 33 [2020-11-30 02:03:00,209 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-11-30 02:03:00,466 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-11-30 02:03:00,996 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-11-30 02:03:02,331 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-11-30 02:03:02,958 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 37 [2020-11-30 02:03:03,013 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,013 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-30 02:03:03,014 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L277 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2020-11-30 02:03:03,015 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)) (and .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x)))) [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L270 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-11-30 02:03:03,016 INFO L274 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-11-30 02:03:03,016 INFO L270 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmin_float_~x .cse1) .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq .cse1 .cse1))))) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) .cse1 .cse2) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not .cse1) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse2))) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L59-1(line 59) the Hoare annotation is: (and (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)))) |ULTIMATE.start_main_#t~short18| (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short18|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse1 (not |ULTIMATE.start_main_#t~short22|))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse2 .cse1))) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L59-3(line 59) the Hoare annotation is: (and (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 |ULTIMATE.start_main_#t~short18|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not |ULTIMATE.start_main_#t~short22|) |ULTIMATE.start_main_#t~short21|) [2020-11-30 02:03:03,017 INFO L270 CegarLoopResult]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~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))) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (= ULTIMATE.start_fmin_float_~y .cse3)) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2) (and (not (fp.eq .cse3 .cse3)) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) .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_fmin_float_~x ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))))) [2020-11-30 02:03:03,018 INFO L270 CegarLoopResult]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short26| .cse2) (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) |ULTIMATE.start_main_#t~short26| .cse2 (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2020-11-30 02:03:03,018 INFO L270 CegarLoopResult]: At program point L59-6(line 59) 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))) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) [2020-11-30 02:03:03,018 INFO L270 CegarLoopResult]: At program point L59-7(line 59) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-11-30 02:03:03,018 INFO L274 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-11-30 02:03:03,018 INFO L274 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-30 02:03:03,018 INFO L274 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2020-11-30 02:03:03,018 INFO L274 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-11-30 02:03:03,019 INFO L270 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.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)))) (or (and (not (fp.eq .cse0 .cse0)) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2) (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (= ULTIMATE.start_fmin_float_~y .cse0)))) [2020-11-30 02:03:03,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:03 BoogieIcfgContainer [2020-11-30 02:03:03,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:03,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:03,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:03,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:03,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:25" (3/4) ... [2020-11-30 02:03:03,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:03:03,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-30 02:03:03,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 02:03:03,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:03:03,104 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:03:03,134 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 02:03:03,135 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) [2020-11-30 02:03:03,135 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) [2020-11-30 02:03:03,136 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~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 [2020-11-30 02:03:03,136 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) [2020-11-30 02:03:03,136 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && y == y) && !(0bv32 == \result)) && x == x) && 1bv32 == \result) && x == x) && !~fp.eq~FLOAT(y, y)) && ~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]))) [2020-11-30 02:03:03,137 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(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-30 02:03:03,137 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2020-11-30 02:03:03,138 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~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(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) [2020-11-30 02:03:03,138 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((((((y == x && !(0bv32 == \result)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-30 02:03:03,139 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == \result && y == res) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) || ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(res, y)) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-30 02:03:03,140 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(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) [2020-11-30 02:03:03,140 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(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y) [2020-11-30 02:03:03,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a965f88-d3ad-469d-af9e-d81145fefbfb/bin/utaipan/witness.graphml [2020-11-30 02:03:03,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:03,199 INFO L168 Benchmark]: Toolchain (without parser) took 39304.43 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 33.1 MB in the beginning and 48.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,200 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:03,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.77 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 21.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.53 ms. Allocated memory is still 54.5 MB. Free memory was 21.9 MB in the beginning and 37.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,201 INFO L168 Benchmark]: Boogie Preprocessor took 65.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 35.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:03,202 INFO L168 Benchmark]: RCFGBuilder took 774.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 39.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,202 INFO L168 Benchmark]: TraceAbstraction took 37893.99 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.3 MB in the beginning and 53.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,203 INFO L168 Benchmark]: Witness Printer took 126.54 ms. Allocated memory is still 81.8 MB. Free memory was 53.3 MB in the beginning and 48.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:03,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.77 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 21.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.53 ms. Allocated memory is still 54.5 MB. Free memory was 21.9 MB in the beginning and 37.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 35.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 774.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 39.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37893.99 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.3 MB in the beginning and 53.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. * Witness Printer took 126.54 ms. Allocated memory is still 81.8 MB. Free memory was 53.3 MB in the beginning and 48.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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: 17]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((!~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(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((y == \result && y == res) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) || ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(res, y)) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((((((y == x && !(0bv32 == \result)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~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(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && y == y) && !(0bv32 == \result)) && x == x) && 1bv32 == \result) && x == x) && !~fp.eq~FLOAT(y, y)) && ~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]))) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~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 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((1bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.3s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1983 SolverSat, 266 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 10.4s 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, 618 HoareAnnotationTreeSize, 14 FomulaSimplifications, 580250 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 84227 FormulaSimplificationTreeSizeReductionInter, 7.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95799 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...