./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/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 0dca3295f12b1ef36cf31c463cf879069525072f ........................................................................................................................................................................................................................................................................................................... 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_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/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 0dca3295f12b1ef36cf31c463cf879069525072f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:01:21,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:01:21,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:01:21,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:01:21,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:01:21,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:01:21,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:01:21,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:01:21,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:01:21,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:01:21,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:01:21,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:01:21,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:01:21,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:01:21,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:01:21,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:01:21,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:01:21,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:01:21,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:01:21,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:01:21,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:01:21,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:01:21,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:01:21,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:01:21,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:01:21,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:01:21,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:01:21,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:01:21,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:01:21,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:01:21,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:01:21,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:01:21,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:01:21,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:01:21,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:01:21,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:01:21,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:01:21,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:01:21,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:01:21,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:01:21,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:01:21,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:01:21,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:01:21,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:01:21,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:01:21,831 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:01:21,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:01:21,831 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:01:21,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:01:21,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:01:21,832 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:01:21,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:01:21,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:01:21,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:01:21,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:01:21,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:01:21,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:01:21,835 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_4a929053-1da0-4e23-90ae-c4f39d2626bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dca3295f12b1ef36cf31c463cf879069525072f [2020-12-09 18:01:22,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:01:22,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:01:22,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:01:22,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:01:22,042 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:01:22,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-09 18:01:22,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/877416433/49a48404c09945ee89ca8354b36bc5c5/FLAG4045d5e3a [2020-12-09 18:01:22,456 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:01:22,457 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-09 18:01:22,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/877416433/49a48404c09945ee89ca8354b36bc5c5/FLAG4045d5e3a [2020-12-09 18:01:22,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/877416433/49a48404c09945ee89ca8354b36bc5c5 [2020-12-09 18:01:22,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:01:22,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:01:22,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:01:22,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:01:22,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:01:22,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcf025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22, skipping insertion in model container [2020-12-09 18:01:22,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:01:22,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:01:22,624 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2020-12-09 18:01:22,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:01:22,635 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:01:22,654 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2020-12-09 18:01:22,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:01:22,667 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:01:22,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22 WrapperNode [2020-12-09 18:01:22,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:01:22,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:01:22,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:01:22,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:01:22,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:01:22,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:01:22,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:01:22,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:01:22,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... [2020-12-09 18:01:22,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:01:22,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:01:22,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:01:22,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:01:22,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:01:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:01:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:01:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 18:01:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:01:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:01:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 18:01:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:01:23,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:01:23,225 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 18:01:23,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:23 BoogieIcfgContainer [2020-12-09 18:01:23,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:01:23,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:01:23,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:01:23,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:01:23,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:01:22" (1/3) ... [2020-12-09 18:01:23,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6705f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:01:23, skipping insertion in model container [2020-12-09 18:01:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:22" (2/3) ... [2020-12-09 18:01:23,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6705f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:01:23, skipping insertion in model container [2020-12-09 18:01:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:23" (3/3) ... [2020-12-09 18:01:23,234 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-12-09 18:01:23,247 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:01:23,250 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:01:23,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:01:23,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:01:23,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:01:23,276 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:01:23,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:01:23,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:01:23,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:01:23,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:01:23,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:01:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 18:01:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:01:23,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:23,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:23,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:23,292 INFO L82 PathProgramCache]: Analyzing trace with hash -815653729, now seen corresponding path program 1 times [2020-12-09 18:01:23,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:01:23,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688977515] [2020-12-09 18:01:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:01:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:23,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688977515] [2020-12-09 18:01:23,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:23,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:01:23,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679620167] [2020-12-09 18:01:23,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:01:23,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:01:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:01:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:01:23,411 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 18:01:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:23,424 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2020-12-09 18:01:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:01:23,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 18:01:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:23,430 INFO L225 Difference]: With dead ends: 30 [2020-12-09 18:01:23,430 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 18:01:23,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:01:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 18:01:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 18:01:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 18:01:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 18:01:23,458 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-12-09 18:01:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:23,458 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 18:01:23,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:01:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 18:01:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:01:23,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:23,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:23,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:01:23,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:23,461 INFO L82 PathProgramCache]: Analyzing trace with hash -407886183, now seen corresponding path program 1 times [2020-12-09 18:01:23,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:01:23,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249869596] [2020-12-09 18:01:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:01:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:01:23,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:01:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:01:23,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:01:23,562 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:01:23,562 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:01:23,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:01:23,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:01:23 BoogieIcfgContainer [2020-12-09 18:01:23,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:01:23,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:01:23,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:01:23,582 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:01:23,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:23" (3/4) ... [2020-12-09 18:01:23,584 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:01:23,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:01:23,586 INFO L168 Benchmark]: Toolchain (without parser) took 1107.57 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 75.9 MB in the end (delta: 578.9 kB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:01:23,586 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:01:23,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.54 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 65.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:01:23,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.56 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 64.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:01:23,588 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 62.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:01:23,588 INFO L168 Benchmark]: RCFGBuilder took 502.90 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 57.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:01:23,589 INFO L168 Benchmark]: TraceAbstraction took 352.57 ms. Allocated memory is still 104.9 MB. Free memory was 56.7 MB in the beginning and 76.5 MB in the end (delta: -19.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:01:23,589 INFO L168 Benchmark]: Witness Printer took 2.71 ms. Allocated memory is still 104.9 MB. Free memory is still 75.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:01:23,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 189.54 ms. Allocated memory is still 104.9 MB. Free memory was 76.3 MB in the beginning and 65.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.56 ms. Allocated memory is still 104.9 MB. Free memory was 65.9 MB in the beginning and 64.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 62.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 502.90 ms. Allocated memory is still 104.9 MB. Free memory was 62.7 MB in the beginning and 57.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 352.57 ms. Allocated memory is still 104.9 MB. Free memory was 56.7 MB in the beginning and 76.5 MB in the end (delta: -19.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.71 ms. Allocated memory is still 104.9 MB. Free memory is still 75.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L18] return x != x; [L74] COND TRUE !isnan_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:01:25,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:01:25,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:01:25,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:01:25,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:01:25,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:01:25,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:01:25,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:01:25,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:01:25,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:01:25,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:01:25,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:01:25,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:01:25,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:01:25,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:01:25,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:01:25,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:01:25,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:01:25,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:01:25,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:01:25,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:01:25,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:01:25,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:01:25,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:01:25,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:01:25,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:01:25,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:01:25,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:01:25,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:01:25,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:01:25,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:01:25,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:01:25,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:01:25,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:01:25,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:01:25,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:01:25,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:01:25,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:01:25,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:01:25,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:01:25,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:01:25,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:01:25,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:01:25,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:01:25,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:01:25,289 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:01:25,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:01:25,289 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:01:25,289 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:01:25,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:01:25,290 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:01:25,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:01:25,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:01:25,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:01:25,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:01:25,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:01:25,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:01:25,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:01:25,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:01:25,292 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:01:25,292 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:01:25,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:01:25,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:01:25,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:01:25,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:01:25,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:01:25,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:01:25,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:01:25,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:01:25,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:01:25,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:01:25,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:01:25,296 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_4a929053-1da0-4e23-90ae-c4f39d2626bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dca3295f12b1ef36cf31c463cf879069525072f [2020-12-09 18:01:25,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:01:25,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:01:25,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:01:25,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:01:25,557 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:01:25,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-09 18:01:25,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/bf9daa560/9905ee7778a84bdfa5d848483dbc251e/FLAG1edb86700 [2020-12-09 18:01:25,967 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:01:25,967 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2020-12-09 18:01:25,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/bf9daa560/9905ee7778a84bdfa5d848483dbc251e/FLAG1edb86700 [2020-12-09 18:01:25,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/data/bf9daa560/9905ee7778a84bdfa5d848483dbc251e [2020-12-09 18:01:25,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:01:25,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:01:25,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:01:25,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:01:25,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:01:25,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:01:25" (1/1) ... [2020-12-09 18:01:25,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441d47fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:25, skipping insertion in model container [2020-12-09 18:01:25,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:01:25" (1/1) ... [2020-12-09 18:01:25,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:01:26,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:01:26,123 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2020-12-09 18:01:26,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:01:26,135 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:01:26,156 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2020-12-09 18:01:26,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:01:26,183 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:01:26,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26 WrapperNode [2020-12-09 18:01:26,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:01:26,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:01:26,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:01:26,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:01:26,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:01:26,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:01:26,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:01:26,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:01:26,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... [2020-12-09 18:01:26,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:01:26,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:01:26,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:01:26,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:01:26,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:01:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 18:01:26,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:01:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:01:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 18:01:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:01:26,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:01:26,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:01:26,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:01:26,598 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 18:01:26,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:26 BoogieIcfgContainer [2020-12-09 18:01:26,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:01:26,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:01:26,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:01:26,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:01:26,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:01:25" (1/3) ... [2020-12-09 18:01:26,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:01:26, skipping insertion in model container [2020-12-09 18:01:26,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:01:26" (2/3) ... [2020-12-09 18:01:26,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709f359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:01:26, skipping insertion in model container [2020-12-09 18:01:26,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:26" (3/3) ... [2020-12-09 18:01:26,609 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-12-09 18:01:26,623 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:01:26,625 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:01:26,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:01:26,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:01:26,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:01:26,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:01:26,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:01:26,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:01:26,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:01:26,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:01:26,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:01:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-09 18:01:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:01:26,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:26,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:26,665 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-12-09 18:01:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:26,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825794125] [2020-12-09 18:01:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:01:26,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:26,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:26,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825794125] [2020-12-09 18:01:26,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:26,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:01:26,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653324174] [2020-12-09 18:01:26,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:01:26,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:26,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:01:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:01:26,818 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-09 18:01:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:26,838 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2020-12-09 18:01:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:01:26,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 18:01:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:26,845 INFO L225 Difference]: With dead ends: 56 [2020-12-09 18:01:26,845 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 18:01:26,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:01:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 18:01:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 18:01:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:01:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-12-09 18:01:26,870 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-12-09 18:01:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:26,870 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-12-09 18:01:26,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:01:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-12-09 18:01:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:01:26,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:26,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:27,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-12-09 18:01:27,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:27,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276578488] [2020-12-09 18:01:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:27,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:27,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:27,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:27,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276578488] [2020-12-09 18:01:27,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:27,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:27,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377036565] [2020-12-09 18:01:27,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:27,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:27,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:27,178 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-12-09 18:01:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:27,223 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-09 18:01:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:27,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 18:01:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:27,224 INFO L225 Difference]: With dead ends: 40 [2020-12-09 18:01:27,224 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 18:01:27,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:27,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 18:01:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 18:01:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 18:01:27,229 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-12-09 18:01:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:27,229 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 18:01:27,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 18:01:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:01:27,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:27,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:27,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:27,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-12-09 18:01:27,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:27,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370226701] [2020-12-09 18:01:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:27,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:27,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:27,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:27,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370226701] [2020-12-09 18:01:27,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:27,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:27,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008470192] [2020-12-09 18:01:27,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:27,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:27,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:27,530 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 18:01:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:27,621 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 18:01:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:27,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 18:01:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:27,622 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:01:27,622 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 18:01:27,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 18:01:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 18:01:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 18:01:27,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-12-09 18:01:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:27,626 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 18:01:27,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 18:01:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:01:27,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:27,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:27,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-12-09 18:01:27,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:27,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287878573] [2020-12-09 18:01:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:27,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:27,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:27,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:27,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287878573] [2020-12-09 18:01:27,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:27,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:27,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213411824] [2020-12-09 18:01:27,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:27,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:27,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:27,920 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 18:01:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:27,952 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 18:01:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:27,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 18:01:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:27,953 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:01:27,953 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 18:01:27,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 18:01:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 18:01:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 18:01:27,957 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-12-09 18:01:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:27,957 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 18:01:27,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 18:01:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:01:27,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:27,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:28,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:01:28,159 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-12-09 18:01:28,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:28,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106047549] [2020-12-09 18:01:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:28,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:28,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:28,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:28,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106047549] [2020-12-09 18:01:28,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:28,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:28,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854375156] [2020-12-09 18:01:28,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:28,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:28,273 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-12-09 18:01:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:28,636 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-12-09 18:01:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:28,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 18:01:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:28,637 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:01:28,637 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 18:01:28,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 18:01:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 18:01:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-12-09 18:01:28,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-12-09 18:01:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:28,642 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-12-09 18:01:28,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-09 18:01:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:01:28,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:28,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:28,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 18:01:28,845 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:28,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-12-09 18:01:28,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:28,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626701333] [2020-12-09 18:01:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:28,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 18:01:28,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:29,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-12-09 18:01:29,043 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:01:29,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:01:29,046 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:01:29,053 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:01:29,055 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 18:01:29,055 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-09 18:01:31,062 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_5| (_ BitVec 64))) (and (let ((.cse0 (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_5|)))) (fp.eq .cse0 .cse0)) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_5|) c_ULTIMATE.start___fpclassify_double_~msw~0) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_5|) c_ULTIMATE.start___fpclassify_double_~lsw~0))) is different from true [2020-12-09 18:01:41,031 WARN L197 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-09 18:01:43,153 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-12-09 18:01:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:43,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626701333] [2020-12-09 18:01:43,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:43,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 18:01:43,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313505687] [2020-12-09 18:01:43,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 18:01:43,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:43,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 18:01:43,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2020-12-09 18:01:43,171 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 8 states. [2020-12-09 18:01:47,175 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 18:01:51,287 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 18:01:55,529 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 42 [2020-12-09 18:01:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:57,698 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-12-09 18:01:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 18:01:57,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-09 18:01:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:57,700 INFO L225 Difference]: With dead ends: 62 [2020-12-09 18:01:57,700 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 18:01:57,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=56, Invalid=128, Unknown=2, NotChecked=24, Total=210 [2020-12-09 18:01:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 18:01:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2020-12-09 18:01:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:01:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-12-09 18:01:57,704 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 15 [2020-12-09 18:01:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:57,704 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-12-09 18:01:57,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 18:01:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-12-09 18:01:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:01:57,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:57,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:57,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 18:01:57,906 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:57,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1042649172, now seen corresponding path program 1 times [2020-12-09 18:01:57,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:57,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887296771] [2020-12-09 18:01:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:57,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:57,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:57,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:57,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887296771] [2020-12-09 18:01:57,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:57,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:57,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559892704] [2020-12-09 18:01:57,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:57,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:57,996 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2020-12-09 18:01:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:58,063 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-12-09 18:01:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:58,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 18:01:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:58,064 INFO L225 Difference]: With dead ends: 40 [2020-12-09 18:01:58,064 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 18:01:58,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 18:01:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 18:01:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-09 18:01:58,069 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2020-12-09 18:01:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:58,069 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-09 18:01:58,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-09 18:01:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 18:01:58,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:58,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:58,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 18:01:58,270 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash -666515868, now seen corresponding path program 1 times [2020-12-09 18:01:58,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:58,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387580443] [2020-12-09 18:01:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:58,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:01:58,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:58,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:58,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387580443] [2020-12-09 18:01:58,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:58,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:58,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592463551] [2020-12-09 18:01:58,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:58,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:58,409 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-12-09 18:01:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:58,568 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-12-09 18:01:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:58,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-09 18:01:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:58,570 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:01:58,570 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 18:01:58,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 18:01:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-12-09 18:01:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-09 18:01:58,574 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 18 [2020-12-09 18:01:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:58,575 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-09 18:01:58,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-09 18:01:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 18:01:58,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:58,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:58,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 18:01:58,777 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:58,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1310041806, now seen corresponding path program 1 times [2020-12-09 18:01:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019731501] [2020-12-09 18:01:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:58,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:01:58,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:58,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:58,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019731501] [2020-12-09 18:01:58,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:58,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:01:58,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383623022] [2020-12-09 18:01:58,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:01:58,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:58,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:01:58,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:01:58,944 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-12-09 18:01:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:01:58,989 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-12-09 18:01:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:01:58,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-09 18:01:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:01:58,991 INFO L225 Difference]: With dead ends: 33 [2020-12-09 18:01:58,991 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 18:01:58,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:01:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 18:01:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 18:01:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:01:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-12-09 18:01:58,995 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 19 [2020-12-09 18:01:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:01:58,995 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-12-09 18:01:58,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:01:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-12-09 18:01:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 18:01:58,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:01:58,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:01:59,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 18:01:59,197 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:01:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:01:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1311888848, now seen corresponding path program 1 times [2020-12-09 18:01:59,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:01:59,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333931944] [2020-12-09 18:01:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 18:01:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:01:59,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:01:59,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:01:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:01:59,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:01:59,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333931944] [2020-12-09 18:01:59,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:01:59,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 18:01:59,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959057446] [2020-12-09 18:01:59,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:01:59,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:01:59,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:01:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:01:59,420 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-12-09 18:02:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:01,838 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-12-09 18:02:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:02:01,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-09 18:02:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:01,840 INFO L225 Difference]: With dead ends: 38 [2020-12-09 18:02:01,840 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 18:02:01,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-09 18:02:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 18:02:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-09 18:02:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:02:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-12-09 18:02:01,845 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-12-09 18:02:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:01,845 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-12-09 18:02:01,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:02:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-12-09 18:02:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 18:02:01,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:02:01,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:02:02,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 18:02:02,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:02:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:02:02,048 INFO L82 PathProgramCache]: Analyzing trace with hash 782688991, now seen corresponding path program 1 times [2020-12-09 18:02:02,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:02:02,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899814944] [2020-12-09 18:02:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 18:02:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:02:02,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:02:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:02:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:02:02,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:02:02,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899814944] [2020-12-09 18:02:02,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:02:02,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:02:02,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540861378] [2020-12-09 18:02:02,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:02:02,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:02:02,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:02:02,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:02:02,222 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-12-09 18:02:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:02,252 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-09 18:02:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:02:02,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 18:02:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:02,253 INFO L225 Difference]: With dead ends: 40 [2020-12-09 18:02:02,253 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 18:02:02,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:02:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 18:02:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-12-09 18:02:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:02:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-09 18:02:02,259 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-12-09 18:02:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:02,259 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-09 18:02:02,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:02:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-09 18:02:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 18:02:02,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:02:02,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:02:02,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 18:02:02,461 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:02:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:02:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 839947293, now seen corresponding path program 1 times [2020-12-09 18:02:02,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:02:02,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948570908] [2020-12-09 18:02:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 18:02:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:02:02,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 18:02:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:02:02,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:02:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:02:03,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:02:03,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948570908] [2020-12-09 18:02:03,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:02:03,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 18:02:03,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070706175] [2020-12-09 18:02:03,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 18:02:03,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:02:03,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 18:02:03,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:02:03,112 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-12-09 18:02:03,778 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-09 18:02:04,154 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-09 18:02:04,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:04,256 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-12-09 18:02:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 18:02:04,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-09 18:02:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:04,257 INFO L225 Difference]: With dead ends: 50 [2020-12-09 18:02:04,257 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 18:02:04,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-09 18:02:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 18:02:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2020-12-09 18:02:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 18:02:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-12-09 18:02:04,262 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2020-12-09 18:02:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:04,262 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-09 18:02:04,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 18:02:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-12-09 18:02:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 18:02:04,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:02:04,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:02:04,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 18:02:04,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:02:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:02:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1085928516, now seen corresponding path program 1 times [2020-12-09 18:02:04,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:02:04,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146537014] [2020-12-09 18:02:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 18:02:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:02:04,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 18:02:04,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:02:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:02:04,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:02:04,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146537014] [2020-12-09 18:02:04,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:02:04,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 18:02:04,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522278454] [2020-12-09 18:02:04,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 18:02:04,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:02:04,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 18:02:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:02:04,739 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-12-09 18:02:05,242 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-12-09 18:02:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:05,386 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-12-09 18:02:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:02:05,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-09 18:02:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:05,387 INFO L225 Difference]: With dead ends: 40 [2020-12-09 18:02:05,387 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 18:02:05,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-09 18:02:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 18:02:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-12-09 18:02:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:02:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-09 18:02:05,391 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-12-09 18:02:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:05,391 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-09 18:02:05,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 18:02:05,391 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-09 18:02:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 18:02:05,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:02:05,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:02:05,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 18:02:05,593 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:02:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:02:05,594 INFO L82 PathProgramCache]: Analyzing trace with hash 598258075, now seen corresponding path program 1 times [2020-12-09 18:02:05,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:02:05,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781863562] [2020-12-09 18:02:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 18:02:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:02:05,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 18:02:05,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:02:05,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-12-09 18:02:05,832 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:02:05,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:02:05,834 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:02:05,852 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:02:05,853 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 18:02:05,853 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-09 18:02:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:02:05,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:02:05,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781863562] [2020-12-09 18:02:05,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:02:05,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 18:02:05,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816854704] [2020-12-09 18:02:05,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:02:05,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:02:05,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:02:05,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:02:05,913 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2020-12-09 18:02:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:06,640 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-09 18:02:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:02:06,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-09 18:02:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:06,641 INFO L225 Difference]: With dead ends: 34 [2020-12-09 18:02:06,641 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 18:02:06,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:02:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 18:02:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 18:02:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 18:02:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-09 18:02:06,645 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-12-09 18:02:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:06,645 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-09 18:02:06,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:02:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-09 18:02:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 18:02:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:02:06,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:02:06,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 18:02:06,847 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:02:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:02:06,848 INFO L82 PathProgramCache]: Analyzing trace with hash -211088551, now seen corresponding path program 1 times [2020-12-09 18:02:06,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:02:06,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009026965] [2020-12-09 18:02:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 18:02:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:02:06,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:02:06,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:02:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:02:06,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:02:06,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009026965] [2020-12-09 18:02:06,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:02:06,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:02:06,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106645425] [2020-12-09 18:02:06,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:02:06,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:02:06,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:02:06,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:02:06,986 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2020-12-09 18:02:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:02:07,010 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-09 18:02:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:02:07,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-09 18:02:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:02:07,010 INFO L225 Difference]: With dead ends: 26 [2020-12-09 18:02:07,010 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:02:07,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:02:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:02:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:02:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:02:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:02:07,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-09 18:02:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:02:07,011 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:02:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:02:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:02:07,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:02:07,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 18:02:07,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:02:12,477 WARN L197 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 136 DAG size of output: 34 [2020-12-09 18:02:12,651 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2020-12-09 18:02:12,895 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-09 18:02:15,542 WARN L197 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 118 DAG size of output: 42 [2020-12-09 18:02:15,544 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-12-09 18:02:15,544 INFO L258 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmax_double_~x) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmax_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 18:02:15,544 INFO L262 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-12-09 18:02:15,544 INFO L262 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-12-09 18:02:15,544 INFO L258 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmax_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L265 CegarLoopResult]: At program point L85(lines 65 86) the Hoare annotation is: true [2020-12-09 18:02:15,545 INFO L258 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (= ULTIMATE.start___fpclassify_double_~x ULTIMATE.start_fmax_double_~x) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmax_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv1 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_double_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_double_#res|)) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ULTIMATE.start_fmax_double_~x)))) [2020-12-09 18:02:15,545 INFO L258 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|) (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= ULTIMATE.start___fpclassify_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))) (= ULTIMATE.start___fpclassify_double_~lsw~0 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_8|)))) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmax_double_~x) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L74(lines 74 83) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point L74-2(lines 74 83) no Hoare annotation was computed. [2020-12-09 18:02:15,545 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:02:15,546 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-12-09 18:02:15,546 INFO L262 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-12-09 18:02:15,546 INFO L258 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmax_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_fmax_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|) ULTIMATE.start___fpclassify_double_~msw~0) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|))))) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___fpclassify_double_~x))) [2020-12-09 18:02:15,546 INFO L262 CegarLoopResult]: For program point L79(lines 79 82) no Hoare annotation was computed. [2020-12-09 18:02:15,546 INFO L262 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-12-09 18:02:15,546 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_main_~y~0)) (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res|)) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|))))) [2020-12-09 18:02:15,546 INFO L262 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-12-09 18:02:15,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,556 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,560 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:02:15 BoogieIcfgContainer [2020-12-09 18:02:15,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:02:15,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:02:15,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:02:15,566 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:02:15,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:01:26" (3/4) ... [2020-12-09 18:02:15,569 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:02:15,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 18:02:15,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 18:02:15,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:02:15,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:02:15,592 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((~fp.eq~DOUBLE(x, x) && 0bv32 == \result) || (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result)) [2020-12-09 18:02:15,593 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result [2020-12-09 18:02:15,593 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && (((3bv32 == \result || 1bv32 == \result) || 2bv32 == \result) || 4bv32 == \result)) && 0bv32 == \result) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == x) [2020-12-09 18:02:15,593 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && x == x) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64, currentRoundingMode : FloatRoundingMode :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:02:15,593 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:02:15,594 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && (\exists v_skolemized_q#valueAsBitvector_8 : bv64, currentRoundingMode : FloatRoundingMode :: (msw == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && lsw == v_skolemized_q#valueAsBitvector_8[31:0])) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 18:02:15,605 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4a929053-1da0-4e23-90ae-c4f39d2626bc/bin/utaipan/witness.graphml [2020-12-09 18:02:15,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:02:15,607 INFO L168 Benchmark]: Toolchain (without parser) took 49619.92 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 40.2 MB in the beginning and 31.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,607 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:02:15,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.68 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 42.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,608 INFO L168 Benchmark]: Boogie Preprocessor took 27.65 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 39.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:02:15,608 INFO L168 Benchmark]: RCFGBuilder took 345.97 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 39.6 MB in the beginning and 56.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,609 INFO L168 Benchmark]: TraceAbstraction took 48964.38 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 35.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,609 INFO L168 Benchmark]: Witness Printer took 39.62 ms. Allocated memory is still 79.7 MB. Free memory was 35.3 MB in the beginning and 31.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:02:15,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 196.68 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 42.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.65 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 39.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 345.97 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 39.6 MB in the beginning and 56.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48964.38 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 35.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 39.62 ms. Allocated memory is still 79.7 MB. Free memory was 35.3 MB in the beginning and 31.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant [2020-12-09 18:02:15,617 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2020-12-09 18:02:15,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((((((x == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && x == x) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64, currentRoundingMode : FloatRoundingMode :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 18:02:15,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((~fp.eq~DOUBLE(x, x) && 0bv32 == \result) || (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result)) - InvariantResult [Line: 31]: Loop Invariant [2020-12-09 18:02:15,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result - InvariantResult [Line: 28]: Loop Invariant [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,624 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((((((0bv32 == \result && (\exists v_skolemized_q#valueAsBitvector_8 : bv64, currentRoundingMode : FloatRoundingMode :: (msw == v_skolemized_q#valueAsBitvector_8[63:32] && ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && lsw == v_skolemized_q#valueAsBitvector_8[31:0])) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 31]: Loop Invariant [2020-12-09 18:02:15,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && 0bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 28]: Loop Invariant [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-12-09 18:02:15,628 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && x == x) && x == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) && ~fp.eq~DOUBLE(x, x)) && (((3bv32 == \result || 1bv32 == \result) || 2bv32 == \result) || 4bv32 == \result)) && 0bv32 == \result) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.5s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 406 SDslu, 710 SDs, 0 SdLazy, 366 SolverSat, 18 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 192 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 246 HoareAnnotationTreeSize, 7 FomulaSimplifications, 9428 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5901 FormulaSimplificationTreeSizeReductionInter, 8.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 243 ConstructedInterpolants, 55 QuantifiedInterpolants, 26814 SizeOfPredicates, 60 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...