./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V --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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:25:07,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:07,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:07,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:07,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:07,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:07,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:07,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:07,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:07,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:07,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:07,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:07,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:07,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:07,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:07,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:07,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:07,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:07,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:07,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:07,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:07,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:07,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:07,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:07,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:07,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:07,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:07,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:07,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:07,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:07,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:07,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:07,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:07,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:07,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:07,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:07,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:07,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:07,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:07,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:07,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:07,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:25:07,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:07,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:07,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:07,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:07,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:07,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:07,763 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:07,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:07,764 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:07,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:25:07,764 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:07,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:07,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:25:07,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:25:07,765 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:07,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:25:07,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:25:07,766 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:25:07,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:07,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:25:07,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:25:07,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:25:07,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:07,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:07,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:07,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:07,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:25:07,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:07,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:07,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:07,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:07,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:07,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:07,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:07,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:07,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:07,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:25:07,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:25:07,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:07,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:07,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:07,775 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_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2021-11-23 02:25:08,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:08,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:08,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:08,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:08,208 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:08,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-23 02:25:08,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/2c83ba9bf/f4bcb79086e5455991b163dc7793dd8f/FLAG8879d12fa [2021-11-23 02:25:08,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:08,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-23 02:25:08,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/2c83ba9bf/f4bcb79086e5455991b163dc7793dd8f/FLAG8879d12fa [2021-11-23 02:25:09,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/2c83ba9bf/f4bcb79086e5455991b163dc7793dd8f [2021-11-23 02:25:09,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:09,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:09,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:09,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:09,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:09,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f28dba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09, skipping insertion in model container [2021-11-23 02:25:09,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:09,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:09,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-23 02:25:09,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-23 02:25:09,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:09,522 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:09,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-23 02:25:09,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-23 02:25:09,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:09,586 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:09,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09 WrapperNode [2021-11-23 02:25:09,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:09,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:09,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:09,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:09,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,657 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2021-11-23 02:25:09,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:09,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:09,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:09,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:09,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:09,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:09,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:09,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:09,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (1/1) ... [2021-11-23 02:25:09,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:09,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:09,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:09,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:25:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:09,924 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:09,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:10,107 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:10,138 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:10,138 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:25:10,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:10 BoogieIcfgContainer [2021-11-23 02:25:10,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:10,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:10,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:10,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:10,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:09" (1/3) ... [2021-11-23 02:25:10,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a0f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:10, skipping insertion in model container [2021-11-23 02:25:10,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:09" (2/3) ... [2021-11-23 02:25:10,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a0f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:10, skipping insertion in model container [2021-11-23 02:25:10,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:10" (3/3) ... [2021-11-23 02:25:10,152 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2021-11-23 02:25:10,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:10,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:25:10,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:10,229 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:25:10,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:25:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:25:10,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:10,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:10,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -576365883, now seen corresponding path program 1 times [2021-11-23 02:25:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:10,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546835146] [2021-11-23 02:25:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:10,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:10,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:10,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546835146] [2021-11-23 02:25:10,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546835146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:10,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:10,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:25:10,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924096634] [2021-11-23 02:25:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:10,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:10,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:10,693 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:10,872 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-11-23 02:25:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:25:10,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:25:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:10,882 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:25:10,882 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 02:25:10,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:10,890 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:10,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:10,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 02:25:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-23 02:25:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-11-23 02:25:10,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 10 [2021-11-23 02:25:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:10,937 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-11-23 02:25:10,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-11-23 02:25:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:25:10,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:10,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:10,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:25:10,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -508829686, now seen corresponding path program 1 times [2021-11-23 02:25:10,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:10,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172472590] [2021-11-23 02:25:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:10,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:25:10,973 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:25:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:25:11,046 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:25:11,047 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:25:11,049 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 02:25:11,052 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 02:25:11,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:25:11,070 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:25:11,074 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:25:11,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:25:11 BoogieIcfgContainer [2021-11-23 02:25:11,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:25:11,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:25:11,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:25:11,121 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:25:11,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:10" (3/4) ... [2021-11-23 02:25:11,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:25:11,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:25:11,127 INFO L158 Benchmark]: Toolchain (without parser) took 1927.46ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 68.5MB in the beginning and 90.0MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:11,128 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 54.0MB in the beginning and 54.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:11,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.33ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 96.4MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:25:11,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.36ms. Allocated memory is still 123.7MB. Free memory was 96.4MB in the beginning and 94.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:25:11,130 INFO L158 Benchmark]: Boogie Preprocessor took 48.69ms. Allocated memory is still 123.7MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:11,131 INFO L158 Benchmark]: RCFGBuilder took 415.69ms. Allocated memory is still 123.7MB. Free memory was 93.5MB in the beginning and 82.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:25:11,132 INFO L158 Benchmark]: TraceAbstraction took 975.56ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 90.7MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:11,133 INFO L158 Benchmark]: Witness Printer took 5.77ms. Allocated memory is still 123.7MB. Free memory was 90.7MB in the beginning and 90.0MB in the end (delta: 644.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:11,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 54.0MB in the beginning and 54.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.33ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 96.4MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.36ms. Allocated memory is still 123.7MB. Free memory was 96.4MB in the beginning and 94.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.69ms. Allocated memory is still 123.7MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 415.69ms. Allocated memory is still 123.7MB. Free memory was 93.5MB in the beginning and 82.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 975.56ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 90.7MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.77ms. Allocated memory is still 123.7MB. Free memory was 90.7MB in the beginning and 90.0MB in the end (delta: 644.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 58]: 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 45, overapproximation of to_real at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 173. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __return_134; [L19] double main__E0; [L20] double main__E1; [L21] double main__S; [L22] int main__i; [L23] main__E1 = 0 [L24] main__S = 0 [L25] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__i=0] [L26] COND TRUE main__i <= 1000000 [L28] main__E0 = __VERIFIER_nondet_double() [L29] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=49, main__i=0] [L30] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=49, main__i=0] [L32] COND TRUE main__E0 <= 1.0 [L34] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main__E0=49, main__i=0] [L35] COND TRUE main____CPAchecker_TMP_0 != 0 [L37] int main____CPAchecker_TMP_1; [L38] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L39] COND FALSE !(!(main____CPAchecker_TMP_1 == 0)) [L173] main__S = ((0.999 * main__S) + main__E0) - main__E1 [L43] main__E1 = main__E0 [L44] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__E0=49, main__E1=49, main__i=0] [L45] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__E0=49, main__E1=49, main__i=0] [L162] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__E0=49, main__E1=49, main__i=0] [L52] int __tmp_1; [L53] __tmp_1 = main____CPAchecker_TMP_2 [L54] int __VERIFIER_assert__cond; [L55] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__E0=49, main__E1=49, main__i=0] [L56] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__E0=49, main__E1=49, main__i=0] [L58] reach_error() VAL [__return_134=0, __return_main=0, __tmp_1=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__E0=49, main__E1=49, main__i=0] - UnprovableResult [Line: 104]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 31 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 [2021-11-23 02:25:11,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V --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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:25:14,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:14,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:14,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:14,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:14,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:14,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:14,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:14,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:14,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:14,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:14,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:14,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:14,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:14,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:14,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:14,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:14,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:14,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:14,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:14,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:14,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:14,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:14,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:14,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:14,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:14,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:14,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:14,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:14,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:14,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:14,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:14,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:14,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:14,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:14,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:14,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:14,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:14,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:14,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:14,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:14,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:25:14,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:14,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:14,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:14,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:14,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:14,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:14,348 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:14,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:14,349 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:14,349 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:14,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:14,350 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:14,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:14,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:25:14,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:25:14,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:14,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:14,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:14,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:14,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:25:14,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:25:14,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:25:14,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:25:14,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:14,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:14,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:14,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:14,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:25:14,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:14,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:14,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:14,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:14,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:14,356 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:25:14,356 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:25:14,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:14,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:14,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:14,357 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_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2021-11-23 02:25:14,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:14,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:14,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:14,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:14,913 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:14,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-23 02:25:15,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/3b4d0c13f/5be314603ca046d2ba38203a41c9167c/FLAGfc46ddf37 [2021-11-23 02:25:15,742 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:15,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-23 02:25:15,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/3b4d0c13f/5be314603ca046d2ba38203a41c9167c/FLAGfc46ddf37 [2021-11-23 02:25:16,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/data/3b4d0c13f/5be314603ca046d2ba38203a41c9167c [2021-11-23 02:25:16,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:16,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:16,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:16,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:16,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:16,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f263c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16, skipping insertion in model container [2021-11-23 02:25:16,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:16,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:16,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-23 02:25:16,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-23 02:25:16,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:16,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:16,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-23 02:25:16,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-23 02:25:16,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:16,473 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:16,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16 WrapperNode [2021-11-23 02:25:16,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:16,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:16,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:16,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:16,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,521 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2021-11-23 02:25:16,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:16,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:16,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:16,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:16,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:16,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:16,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:16,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:16,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (1/1) ... [2021-11-23 02:25:16,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:16,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:16,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:25:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:16,764 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:16,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:20,256 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:20,264 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:20,264 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:25:20,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:20 BoogieIcfgContainer [2021-11-23 02:25:20,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:20,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:20,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:20,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:20,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:16" (1/3) ... [2021-11-23 02:25:20,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597e3591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:20, skipping insertion in model container [2021-11-23 02:25:20,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:16" (2/3) ... [2021-11-23 02:25:20,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597e3591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:20, skipping insertion in model container [2021-11-23 02:25:20,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:20" (3/3) ... [2021-11-23 02:25:20,277 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2021-11-23 02:25:20,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:20,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:25:20,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:20,340 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:25:20,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:25:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:25:20,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:20,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:20,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-23 02:25:20,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:25:20,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927249687] [2021-11-23 02:25:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:20,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:25:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:25:20,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:25:20,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:25:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:25:20,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:20,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:20,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:25:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927249687] [2021-11-23 02:25:20,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927249687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:20,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:25:20,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535997889] [2021-11-23 02:25:20,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:20,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:25:20,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:25:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:25:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:25:20,987 INFO L87 Difference]: Start difference. First operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:21,152 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2021-11-23 02:25:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:25:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:25:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:21,170 INFO L225 Difference]: With dead ends: 62 [2021-11-23 02:25:21,170 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 02:25:21,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:25:21,181 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 54 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:21,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 151 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:25:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 02:25:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-23 02:25:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-23 02:25:21,245 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-23 02:25:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:21,246 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-23 02:25:21,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-23 02:25:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:25:21,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:21,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:21,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:25:21,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2021-11-23 02:25:21,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:25:21,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635709939] [2021-11-23 02:25:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:21,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:25:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:25:21,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:25:21,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:25:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:21,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:25:21,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:21,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:21,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:25:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635709939] [2021-11-23 02:25:21,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635709939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:21,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:21,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:25:21,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249336981] [2021-11-23 02:25:21,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:21,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:25:21,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:25:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:25:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:25:21,744 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:24,026 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2021-11-23 02:25:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:25:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:25:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:24,030 INFO L225 Difference]: With dead ends: 88 [2021-11-23 02:25:24,030 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 02:25:24,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:25:24,033 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:24,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:25:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 02:25:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38. [2021-11-23 02:25:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-23 02:25:24,046 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 13 [2021-11-23 02:25:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:24,047 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-23 02:25:24,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-23 02:25:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:25:24,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:24,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:24,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:24,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:25:24,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1349105153, now seen corresponding path program 1 times [2021-11-23 02:25:24,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:25:24,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907416179] [2021-11-23 02:25:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:24,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:25:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:25:24,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:25:24,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:25:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:24,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:25:24,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:25,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:32,065 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-23 02:25:34,116 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-23 02:25:48,387 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from false [2021-11-23 02:25:50,444 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from true [2021-11-23 02:26:05,091 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) is different from true [2021-11-23 02:26:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:17,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:26:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907416179] [2021-11-23 02:26:17,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907416179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:17,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:17,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 02:26:17,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304310392] [2021-11-23 02:26:17,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:17,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:26:17,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:26:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:26:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=30, Unknown=5, NotChecked=42, Total=110 [2021-11-23 02:26:17,622 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:19,705 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (= |c_ULTIMATE.start_main_~main__S~0#1| .cse0) (= .cse0 |c_ULTIMATE.start_main_~main__E1~0#1|) (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse1))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:26:21,770 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (= |c_ULTIMATE.start_main_~main__S~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_main_~main__E1~0#1|) (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:26:23,840 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (= |c_ULTIMATE.start_main_~main__S~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:26:26,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:26:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:26,759 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2021-11-23 02:26:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:26:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:26:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:26,761 INFO L225 Difference]: With dead ends: 73 [2021-11-23 02:26:26,761 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 02:26:26,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=39, Invalid=33, Unknown=8, NotChecked=102, Total=182 [2021-11-23 02:26:26,763 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:26,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 65 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 1 Unknown, 113 Unchecked, 2.9s Time] [2021-11-23 02:26:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 02:26:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-11-23 02:26:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-11-23 02:26:26,780 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 13 [2021-11-23 02:26:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:26,781 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-11-23 02:26:26,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-11-23 02:26:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:26:26,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:26,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:26,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 02:26:26,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:26:26,990 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:26,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1134941057, now seen corresponding path program 1 times [2021-11-23 02:26:26,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:26:26,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335187325] [2021-11-23 02:26:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:26,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:26:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:26:26,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:26:27,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:26:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:27,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:26:27,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:28,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:39,039 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse0 .cse1) (not (fp.geq .cse0 (fp.neg .cse1))))) is different from false [2021-11-23 02:26:41,095 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse0 .cse1) (not (fp.geq .cse0 (fp.neg .cse1))))) is different from true [2021-11-23 02:27:04,031 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse0 .cse1) (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (not (fp.geq .cse0 (fp.neg .cse1))))) is different from false [2021-11-23 02:27:06,085 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse0 .cse1) (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (not (fp.geq .cse0 (fp.neg .cse1))))) is different from true [2021-11-23 02:27:24,887 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.leq .cse0 .cse1) (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse2)) (not (fp.geq .cse0 (fp.neg .cse1))) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse2)))))) is different from true [2021-11-23 02:27:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:40,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:27:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335187325] [2021-11-23 02:27:40,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335187325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:40,827 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:40,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 12 [2021-11-23 02:27:40,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248831575] [2021-11-23 02:27:40,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:40,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:27:40,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:27:40,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:27:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=39, Unknown=5, NotChecked=48, Total=132 [2021-11-23 02:27:40,830 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:42,917 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.leq .cse0 .cse1) (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse2)) (not (fp.geq .cse0 (fp.neg .cse1))) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse2)))))) (= |c_ULTIMATE.start_main_~main__S~0#1| .cse3) (= .cse3 |c_ULTIMATE.start_main_~main__E1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:27:44,981 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (= |c_ULTIMATE.start_main_~main__S~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_main_~main__E1~0#1|) (let ((.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse2 .cse3) (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq .cse2 (fp.neg .cse3))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:27:47,043 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (= |c_ULTIMATE.start_main_~main__S~0#1| .cse1) (= .cse1 |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse2 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (or (fp.leq .cse2 .cse3) (not (fp.geq .cse2 (fp.neg .cse3))))))) is different from true [2021-11-23 02:27:49,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:27:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:49,458 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2021-11-23 02:27:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:27:49,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 02:27:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:49,460 INFO L225 Difference]: With dead ends: 79 [2021-11-23 02:27:49,460 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 02:27:49,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=46, Invalid=42, Unknown=8, NotChecked=114, Total=210 [2021-11-23 02:27:49,463 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:49,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 76 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 1 Unknown, 157 Unchecked, 2.4s Time] [2021-11-23 02:27:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 02:27:49,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-11-23 02:27:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-11-23 02:27:49,472 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2021-11-23 02:27:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-23 02:27:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-11-23 02:27:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:27:49,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:49,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:49,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:27:49,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:27:49,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:27:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash -151896705, now seen corresponding path program 1 times [2021-11-23 02:27:49,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:27:49,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404096029] [2021-11-23 02:27:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:49,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:27:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:27:49,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:27:49,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:27:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:49,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:27:49,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:49,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:27:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:49,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:27:49,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404096029] [2021-11-23 02:27:49,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404096029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:49,895 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:49,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:27:49,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090937336] [2021-11-23 02:27:49,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:49,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:27:49,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:27:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:27:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:27:49,897 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:50,104 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-11-23 02:27:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:27:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 02:27:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:50,105 INFO L225 Difference]: With dead ends: 49 [2021-11-23 02:27:50,105 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 02:27:50,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:27:50,109 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:50,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:27:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 02:27:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 02:27:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-23 02:27:50,117 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2021-11-23 02:27:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:50,118 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-23 02:27:50,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-23 02:27:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:27:50,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:50,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:50,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:27:50,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:27:50,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:27:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -327957724, now seen corresponding path program 1 times [2021-11-23 02:27:50,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:27:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130046403] [2021-11-23 02:27:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:50,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:27:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:27:50,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:27:50,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:27:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:27:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:50,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:27:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:50,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:27:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130046403] [2021-11-23 02:27:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130046403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:50,599 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:50,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:27:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055906338] [2021-11-23 02:27:50,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:50,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:27:50,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:27:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:27:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:27:50,602 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:50,782 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-11-23 02:27:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:27:50,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 02:27:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:50,784 INFO L225 Difference]: With dead ends: 63 [2021-11-23 02:27:50,784 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 02:27:50,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:50,785 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 45 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:50,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 140 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:27:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 02:27:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 31. [2021-11-23 02:27:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-23 02:27:50,797 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2021-11-23 02:27:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-23 02:27:50,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-23 02:27:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:27:50,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:50,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:50,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:27:51,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:27:51,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:27:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 401808482, now seen corresponding path program 1 times [2021-11-23 02:27:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:27:51,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619427095] [2021-11-23 02:27:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:51,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:27:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:27:51,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:27:51,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:27:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:51,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:27:51,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:35,176 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse0)))) is different from false [2021-11-23 02:28:37,184 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse0)))) is different from true [2021-11-23 02:29:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:29:29,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:37,709 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-23 02:29:39,761 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-23 02:29:52,853 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from false [2021-11-23 02:29:54,905 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from true [2021-11-23 02:30:07,560 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) is different from true [2021-11-23 02:31:35,945 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |c_ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg .cse0))) (not (fp.leq |v_ULTIMATE.start_main_~main__E0~0#1_22| .cse0))))) is different from true [2021-11-23 02:31:52,073 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |c_ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0))))))) is different from true [2021-11-23 02:32:09,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0))))))))) is different from false [2021-11-23 02:32:11,669 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0))))))))) is different from true [2021-11-23 02:32:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:44,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619427095] [2021-11-23 02:32:44,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619427095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:44,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:44,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2021-11-23 02:32:44,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591979943] [2021-11-23 02:32:44,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:44,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 02:32:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:32:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 02:32:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=82, Unknown=16, NotChecked=182, Total=342 [2021-11-23 02:32:44,292 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:46,325 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-23 02:33:07,586 WARN L227 SmtUtils]: Spent 9.07s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:33:09,963 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0)) (= |c_ULTIMATE.start_main_~main__S~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~main__E0~0#1_22| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |v_ULTIMATE.start_main_~main__E0~0#1_22|) |c_ULTIMATE.start_main_~main__E0~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.geq |v_ULTIMATE.start_main_~main__E0~0#1_22| (fp.neg .cse1))) (not (fp.leq |v_ULTIMATE.start_main_~main__E0~0#1_22| .cse1))))) (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:33:12,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:14,494 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq |c_ULTIMATE.start_main_~main__E1~0#1| .cse0) (= |c_ULTIMATE.start_main_~main__S~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse1))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) (fp.geq |c_ULTIMATE.start_main_~main__E1~0#1| (fp.neg .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-23 02:33:17,128 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~main__E1~0#1| .cse1) (= |c_ULTIMATE.start_main_~main__S~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse1)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) (fp.geq |c_ULTIMATE.start_main_~main__E1~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-23 02:33:19,223 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |c_ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~main__E1~0#1| .cse1) (= |c_ULTIMATE.start_main_~main__S~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| .cse1) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (fp.geq |c_ULTIMATE.start_main_~main__E1~0#1| .cse0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-23 02:33:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:27,576 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-11-23 02:33:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:33:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 02:33:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:27,580 INFO L225 Difference]: With dead ends: 72 [2021-11-23 02:33:27,580 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 02:33:27,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 81.5s TimeCoverageRelationStatistics Valid=84, Invalid=120, Unknown=26, NotChecked=420, Total=650 [2021-11-23 02:33:27,582 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:27,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 1 Unknown, 276 Unchecked, 3.2s Time] [2021-11-23 02:33:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 02:33:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-11-23 02:33:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:33:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-11-23 02:33:27,591 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 24 [2021-11-23 02:33:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:27,591 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-11-23 02:33:27,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:33:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-23 02:33:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:33:27,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:27,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:27,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:27,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:33:27,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash -60423724, now seen corresponding path program 1 times [2021-11-23 02:33:27,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:33:27,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611253055] [2021-11-23 02:33:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:27,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:33:27,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:33:27,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:33:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489a8af1-3f0b-45ed-ade8-ed30ec48bea8/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:33:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:29,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:33:29,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:34:47,940 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:14,689 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse2 (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 .cse3) |ULTIMATE.start_main_~main__E1~0#1|) .cse3)))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1))))) is different from false [2021-11-23 02:36:16,720 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__E1~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.neg .cse1))) (and (fp.geq |ULTIMATE.start_main_~main__E0~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E1~0#1| .cse1) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse2 (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 .cse3) |ULTIMATE.start_main_~main__E1~0#1|) .cse3)))) |ULTIMATE.start_main_~main__E0~0#1|) |ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.geq |ULTIMATE.start_main_~main__E1~0#1| .cse0) (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse1))))) is different from true [2021-11-23 02:38:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:38:37,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:45,641 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-23 02:38:47,698 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-23 02:39:02,152 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from false [2021-11-23 02:39:04,209 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq |c_ULTIMATE.start_main_~main__E0~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |c_ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))) is different from true [2021-11-23 02:39:18,735 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__E0~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.leq |ULTIMATE.start_main_~main__E0~0#1| .cse0)) (not (fp.geq |ULTIMATE.start_main_~main__E0~0#1| (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~main__S~0#1|) |ULTIMATE.start_main_~main__E0~0#1|) |c_ULTIMATE.start_main_~main__E1~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) is different from true