./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P --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 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:17:22,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:17:22,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:17:22,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:17:22,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:17:22,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:17:22,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:17:22,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:17:22,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:17:22,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:17:22,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:17:22,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:17:22,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:17:22,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:17:22,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:17:22,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:17:22,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:17:22,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:17:22,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:17:22,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:17:22,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:17:22,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:17:22,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:17:22,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:17:22,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:17:22,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:17:22,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:17:22,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:17:22,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:17:22,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:17:22,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:17:22,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:17:22,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:17:22,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:17:22,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:17:22,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:17:22,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:17:22,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:17:22,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:17:22,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:17:22,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:17:22,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:17:22,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:17:22,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:17:22,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:17:22,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:17:22,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:17:22,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:17:22,749 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:17:22,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:17:22,749 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:17:22,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:17:22,750 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:17:22,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:17:22,751 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:17:22,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:17:22,751 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:17:22,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:17:22,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:17:22,752 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:17:22,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:17:22,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:17:22,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:17:22,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:17:22,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:17:22,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:17:22,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:17:22,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:17:22,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:17:22,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:17:22,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:17:22,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:17:22,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:17:22,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:17:22,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:22,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:17:22,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:17:22,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:17:22,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:17:22,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:17:22,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:17:22,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:17:22,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:17:22,759 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_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2021-11-21 00:17:23,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:17:23,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:17:23,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:17:23,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:17:23,078 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:17:23,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/interpolation.c [2021-11-21 00:17:23,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/d1962f2a2/7493a575645c405d87cf94a109824111/FLAG8898b81b0 [2021-11-21 00:17:23,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:17:23,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c [2021-11-21 00:17:23,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/d1962f2a2/7493a575645c405d87cf94a109824111/FLAG8898b81b0 [2021-11-21 00:17:24,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/d1962f2a2/7493a575645c405d87cf94a109824111 [2021-11-21 00:17:24,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:17:24,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:17:24,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:24,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:17:24,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:17:24,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc7f593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24, skipping insertion in model container [2021-11-21 00:17:24,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:17:24,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:17:24,377 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_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2021-11-21 00:17:24,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:24,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:17:24,446 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_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2021-11-21 00:17:24,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:24,469 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:17:24,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24 WrapperNode [2021-11-21 00:17:24,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:24,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:24,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:17:24,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:17:24,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,506 INFO L137 Inliner]: procedures = 18, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2021-11-21 00:17:24,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:24,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:17:24,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:17:24,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:17:24,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:17:24,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:17:24,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:17:24,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:17:24,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (1/1) ... [2021-11-21 00:17:24,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:17:24,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:17:24,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:17:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:17:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:17:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:17:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 00:17:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:17:24,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:17:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-21 00:17:24,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:17:24,685 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:17:24,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:17:24,806 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:17:24,868 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:17:24,868 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:17:24,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:24 BoogieIcfgContainer [2021-11-21 00:17:24,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:17:24,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:17:24,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:17:24,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:17:24,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:17:24" (1/3) ... [2021-11-21 00:17:24,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2e2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:24, skipping insertion in model container [2021-11-21 00:17:24,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:24" (2/3) ... [2021-11-21 00:17:24,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2e2ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:24, skipping insertion in model container [2021-11-21 00:17:24,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:24" (3/3) ... [2021-11-21 00:17:24,888 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c [2021-11-21 00:17:24,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:17:24,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:17:24,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:17:24,948 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 [2021-11-21 00:17:24,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:17:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-21 00:17:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:17:24,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:24,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:17:24,968 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash 85683978, now seen corresponding path program 1 times [2021-11-21 00:17:24,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:24,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888709000] [2021-11-21 00:17:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:24,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:17:25,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:25,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888709000] [2021-11-21 00:17:25,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888709000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:25,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:25,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:17:25,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811379344] [2021-11-21 00:17:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:25,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:25,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:25,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:25,304 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-21 00:17:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:25,389 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-11-21 00:17:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-21 00:17:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:25,396 INFO L225 Difference]: With dead ends: 23 [2021-11-21 00:17:25,397 INFO L226 Difference]: Without dead ends: 13 [2021-11-21 00:17:25,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:25,403 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:25,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:17:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-21 00:17:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2021-11-21 00:17:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-11-21 00:17:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-21 00:17:25,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-21 00:17:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:25,440 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-21 00:17:25,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-21 00:17:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-21 00:17:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:17:25,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:25,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:17:25,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:17:25,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1666710841, now seen corresponding path program 1 times [2021-11-21 00:17:25,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748302861] [2021-11-21 00:17:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:25,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:17:25,476 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:17:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:17:25,535 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:17:25,535 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:17:25,537 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:17:25,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:17:25,547 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 00:17:25,552 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:17:25,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:17:25 BoogieIcfgContainer [2021-11-21 00:17:25,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:17:25,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:17:25,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:17:25,585 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:17:25,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:24" (3/4) ... [2021-11-21 00:17:25,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:17:25,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:17:25,589 INFO L158 Benchmark]: Toolchain (without parser) took 1404.11ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 81.9MB in the beginning and 132.1MB in the end (delta: -50.2MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2021-11-21 00:17:25,589 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:17:25,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.88ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 87.0MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 00:17:25,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.93ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:17:25,591 INFO L158 Benchmark]: Boogie Preprocessor took 25.88ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:17:25,592 INFO L158 Benchmark]: RCFGBuilder took 337.68ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 72.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:17:25,593 INFO L158 Benchmark]: TraceAbstraction took 701.62ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 71.6MB in the beginning and 132.1MB in the end (delta: -60.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:17:25,593 INFO L158 Benchmark]: Witness Printer took 3.62ms. Allocated memory is still 165.7MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:17:25,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.88ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 87.0MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.93ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.88ms. Allocated memory is still 113.2MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.68ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 72.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 701.62ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 71.6MB in the beginning and 132.1MB in the end (delta: -60.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.62ms. Allocated memory is still 165.7MB. Free memory is still 132.1MB. 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: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 26, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L18] t = __VERIFIER_nondet_float() [L19] EXPR min[0] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L19] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) [L19] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L21] i = 0 VAL [i=0, max={5:0}, min={4:0}] [L21] COND TRUE i < sizeof(min) / sizeof(min[0]) [L22] EXPR max[i] VAL [i=0, max={5:0}, max[i]=49, min={4:0}] [L22] COND TRUE t <= max[i] [L24] EXPR min[i] [L24] EXPR max[i] [L24] EXPR min[i] [L24] z = (t - min[i]) / (max[i] - min[i]) [L26] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-11-21 00:17:25,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/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_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P --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 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:17:28,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:17:28,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:17:28,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:17:28,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:17:28,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:17:28,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:17:28,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:17:28,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:17:28,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:17:28,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:17:28,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:17:28,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:17:28,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:17:28,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:17:28,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:17:28,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:17:28,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:17:28,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:17:28,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:17:28,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:17:28,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:17:28,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:17:28,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:17:28,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:17:28,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:17:28,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:17:28,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:17:28,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:17:28,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:17:28,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:17:28,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:17:28,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:17:28,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:17:28,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:17:28,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:17:28,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:17:28,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:17:28,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:17:28,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:17:28,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:17:28,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:17:28,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:17:28,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:17:28,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:17:28,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:17:28,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:17:28,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:17:28,254 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:17:28,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:17:28,255 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:17:28,255 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:17:28,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:17:28,256 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:17:28,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:17:28,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:17:28,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:17:28,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:17:28,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:17:28,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:17:28,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:17:28,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:17:28,260 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:17:28,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:17:28,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:17:28,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:17:28,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:17:28,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:17:28,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:17:28,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:17:28,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:28,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:17:28,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:17:28,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:17:28,263 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:17:28,263 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:17:28,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:17:28,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:17:28,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:17:28,264 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_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2021-11-21 00:17:28,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:17:28,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:17:28,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:17:28,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:17:28,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:17:28,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/interpolation.c [2021-11-21 00:17:28,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/e576e602b/c306497274b24a5cb0d5a13a6fb54fd4/FLAG1a27924f6 [2021-11-21 00:17:29,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:17:29,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c [2021-11-21 00:17:29,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/e576e602b/c306497274b24a5cb0d5a13a6fb54fd4/FLAG1a27924f6 [2021-11-21 00:17:29,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/data/e576e602b/c306497274b24a5cb0d5a13a6fb54fd4 [2021-11-21 00:17:29,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:17:29,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:17:29,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:29,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:17:29,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:17:29,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:29" (1/1) ... [2021-11-21 00:17:29,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdf12a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:29, skipping insertion in model container [2021-11-21 00:17:29,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:17:29" (1/1) ... [2021-11-21 00:17:29,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:17:29,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:17:29,911 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_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2021-11-21 00:17:29,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:29,944 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:17:29,957 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_4f173581-5455-41d1-8bb9-44022a7a3fac/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2021-11-21 00:17:30,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:17:30,026 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:17:30,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30 WrapperNode [2021-11-21 00:17:30,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:17:30,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:30,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:17:30,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:17:30,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,064 INFO L137 Inliner]: procedures = 19, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2021-11-21 00:17:30,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:17:30,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:17:30,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:17:30,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:17:30,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:17:30,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:17:30,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:17:30,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:17:30,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (1/1) ... [2021-11-21 00:17:30,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:17:30,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:17:30,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:17:30,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:17:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:17:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-21 00:17:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:17:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:17:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-21 00:17:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:17:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:17:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:17:30,264 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:17:30,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:17:31,810 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:17:31,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:17:31,816 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:17:31,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:31 BoogieIcfgContainer [2021-11-21 00:17:31,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:17:31,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:17:31,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:17:31,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:17:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:17:29" (1/3) ... [2021-11-21 00:17:31,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24daad92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:31, skipping insertion in model container [2021-11-21 00:17:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:17:30" (2/3) ... [2021-11-21 00:17:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24daad92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:17:31, skipping insertion in model container [2021-11-21 00:17:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:17:31" (3/3) ... [2021-11-21 00:17:31,826 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c [2021-11-21 00:17:31,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:17:31,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:17:31,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:17:31,893 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 [2021-11-21 00:17:31,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:17:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) [2021-11-21 00:17:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:17:31,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:31,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:31,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2021-11-21 00:17:31,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:17:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476599377] [2021-11-21 00:17:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:31,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:17:31,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:17:31,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:17:31,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:17:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:32,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:17:32,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:17:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:17:32,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:17:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:17:32,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:17:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476599377] [2021-11-21 00:17:32,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476599377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:32,387 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:32,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:17:32,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808784030] [2021-11-21 00:17:32,390 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:32,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:17:32,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:17:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:17:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:17:32,423 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-11-21 00:17:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:32,439 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-11-21 00:17:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:17:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-11-21 00:17:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:32,452 INFO L225 Difference]: With dead ends: 29 [2021-11-21 00:17:32,452 INFO L226 Difference]: Without dead ends: 13 [2021-11-21 00:17:32,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:17:32,464 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:32,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:17:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-21 00:17:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-21 00:17:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-21 00:17:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-21 00:17:32,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-11-21 00:17:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:32,504 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-21 00:17:32,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-11-21 00:17:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-21 00:17:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:17:32,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:32,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:32,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:17:32,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:17:32,722 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2021-11-21 00:17:32,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:17:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65726710] [2021-11-21 00:17:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:32,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:17:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:17:32,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:17:32,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:17:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:33,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:17:33,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:17:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:17:33,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:17:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:17:33,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:17:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65726710] [2021-11-21 00:17:33,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65726710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:33,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:33,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:17:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143118437] [2021-11-21 00:17:33,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:33,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:17:33,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:17:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:17:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:17:33,237 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-21 00:17:35,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:35,483 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-11-21 00:17:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:17:35,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-11-21 00:17:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:35,485 INFO L225 Difference]: With dead ends: 23 [2021-11-21 00:17:35,485 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 00:17:35,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:17:35,487 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:35,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:17:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 00:17:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-21 00:17:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2021-11-21 00:17:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-21 00:17:35,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2021-11-21 00:17:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:35,494 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-21 00:17:35,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-21 00:17:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-21 00:17:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:17:35,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:35,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:35,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:17:35,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:17:35,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2021-11-21 00:17:35,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:17:35,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753490129] [2021-11-21 00:17:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:35,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:17:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:17:35,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:17:35,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:17:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:36,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 00:17:36,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:17:38,789 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:17:38,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 392 treesize of output 192 [2021-11-21 00:20:27,903 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (let ((.cse1 (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse2) (fp.sub roundNearestTiesToEven .cse0 .cse2)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse1)))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from true [2021-11-21 00:20:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:20:44,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:20:55,261 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from false [2021-11-21 00:21:09,042 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from false [2021-11-21 00:21:11,086 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from true [2021-11-21 00:21:23,742 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from false [2021-11-21 00:21:25,780 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from true [2021-11-21 00:21:39,521 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)))) is different from false [2021-11-21 00:21:56,801 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)))) is different from true [2021-11-21 00:22:09,614 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (not |c_ULTIMATE.start_main_#t~short7#1|))) is different from false [2021-11-21 00:22:11,654 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (not |c_ULTIMATE.start_main_#t~short7#1|))) is different from true [2021-11-21 00:22:30,216 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|))) (let ((.cse4 (let ((.cse6 (select .cse1 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| (let ((.cse0 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))) (let ((.cse2 (let ((.cse3 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse3) (fp.sub c_currentRoundingMode .cse4 .cse3))))) (and (fp.geq .cse2 (_ +zero 8 24)) (fp.leq .cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse4)) (not |c_ULTIMATE.start_main_#t~short7#1|)))) is different from true [2021-11-21 00:22:44,356 WARN L227 SmtUtils]: Spent 14.11s on a formula simplification. DAG size of input: 8 DAG size of output: 3 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:22:44,356 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-21 00:22:44,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 133 [2021-11-21 00:24:01,358 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~t~0#1_8| (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)))) (or (not (fp.geq |v_ULTIMATE.start_main_~t~0#1_8| .cse0)) (not (fp.leq |v_ULTIMATE.start_main_~t~0#1_8| .cse1)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (fp.leq (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~t~0#1_8| .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))))))) (forall ((v_arrayElimCell_4 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) is different from false [2021-11-21 00:24:03,398 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~t~0#1_8| (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)))) (or (not (fp.geq |v_ULTIMATE.start_main_~t~0#1_8| .cse0)) (not (fp.leq |v_ULTIMATE.start_main_~t~0#1_8| .cse1)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (fp.leq (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~t~0#1_8| .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))))))) (forall ((v_arrayElimCell_4 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) is different from true [2021-11-21 00:24:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:24:03,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:24:03,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753490129] [2021-11-21 00:24:03,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753490129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:03,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:03,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-11-21 00:24:03,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387304507] [2021-11-21 00:24:03,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:03,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:24:03,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:24:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:24:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=84, Unknown=13, NotChecked=234, Total=380 [2021-11-21 00:24:03,403 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-11-21 00:24:05,465 WARN L838 $PredicateComparison]: unable to prove that (and (or (forall ((|v_ULTIMATE.start_main_~t~0#1_8| (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)))) (or (not (fp.geq |v_ULTIMATE.start_main_~t~0#1_8| .cse0)) (not (fp.leq |v_ULTIMATE.start_main_~t~0#1_8| .cse1)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (fp.leq (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~t~0#1_8| .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))))))) (forall ((v_arrayElimCell_4 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 00:24:07,508 WARN L860 $PredicateComparison]: unable to prove that (and (or (forall ((|v_ULTIMATE.start_main_~t~0#1_8| (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)))) (or (not (fp.geq |v_ULTIMATE.start_main_~t~0#1_8| .cse0)) (not (fp.leq |v_ULTIMATE.start_main_~t~0#1_8| .cse1)) (not (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (fp.leq (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~t~0#1_8| .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))))))) (forall ((v_arrayElimCell_4 (_ BitVec 32))) (not (= (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-21 00:25:38,874 WARN L227 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 62 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:25:41,943 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|))) (let ((.cse0 (let ((.cse9 (select .cse7 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9)))) (.cse3 (not |c_ULTIMATE.start_main_#t~short7#1|)) (.cse1 (let ((.cse8 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse8) ((_ extract 30 23) .cse8) ((_ extract 22 0) .cse8)))) (.cse5 (let ((.cse6 (select .cse7 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (and (= |c_ULTIMATE.start_main_~#max~0#1.offset| (_ bv0 32)) (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.geq |c_ULTIMATE.start_main_~t~0#1| .cse1) (= |c_ULTIMATE.start_main_~#min~0#1.offset| (_ bv0 32)) (or (let ((.cse2 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (and (fp.geq .cse2 (_ +zero 8 24)) (fp.leq .cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse0)) .cse3) (let ((.cse4 (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse5))) (or (and (not .cse4) .cse3) (and .cse4 |c_ULTIMATE.start_main_#t~short7#1|))) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-21 00:25:44,561 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|))) (let ((.cse3 (let ((.cse9 (select .cse7 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9)))) (.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse4 (let ((.cse8 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse8) ((_ extract 30 23) .cse8) ((_ extract 22 0) .cse8)))) (.cse0 (let ((.cse6 (select .cse7 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (and (= |c_ULTIMATE.start_main_~#max~0#1.offset| (_ bv0 32)) (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (let ((.cse1 (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse3))) (or (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse2 (not .cse1)))) (fp.geq |c_ULTIMATE.start_main_~t~0#1| .cse4) (= |c_ULTIMATE.start_main_~#min~0#1.offset| (_ bv0 32)) (= .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (or .cse2 (let ((.cse5 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse4) (fp.sub c_currentRoundingMode .cse0 .cse4)))) (and (fp.geq .cse5 (_ +zero 8 24)) (fp.leq .cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-21 00:26:51,164 WARN L227 SmtUtils]: Spent 49.89s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:28:14,463 WARN L227 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:28:16,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:19,562 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|)) (.cse9 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse4 (let ((.cse12 (select .cse1 (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse9)))) (fp ((_ extract 31 31) .cse12) ((_ extract 30 23) .cse12) ((_ extract 22 0) .cse12)))) (.cse2 (let ((.cse11 (select .cse8 |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse3 (let ((.cse10 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= |c_ULTIMATE.start_main_~#max~0#1.offset| (_ bv0 32)) (= (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.geq |c_ULTIMATE.start_main_~t~0#1| .cse2) (= |c_ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse3) (= |c_ULTIMATE.start_main_~#min~0#1.offset| (_ bv0 32)) (= |c_ULTIMATE.start_main_#t~mem9#1| .cse4) (or (let ((.cse5 (let ((.cse6 (let ((.cse7 (select .cse8 (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse9)))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse6) (fp.sub c_currentRoundingMode .cse4 .cse6))))) (and (fp.geq .cse5 (_ +zero 8 24)) (fp.leq .cse5 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= .cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-21 00:28:21,620 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|)) (.cse10 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse11 (select .cse1 (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse10)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|))) (let ((.cse3 (let ((.cse8 (let ((.cse9 (select .cse7 (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse10)))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse8) (fp.sub c_currentRoundingMode .cse2 .cse8)))) (.cse4 (let ((.cse6 (select .cse7 |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (and (= |c_ULTIMATE.start_main_~#max~0#1.offset| (_ bv0 32)) (= (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main_~t~0#1| .cse4) (= |c_ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~#min~0#1.offset| (_ bv0 32)) (fp.leq .cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (= .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= (let ((.cse5 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from false [2021-11-21 00:28:23,682 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|)) (.cse10 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse11 (select .cse1 (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse10)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|))) (let ((.cse3 (let ((.cse8 (let ((.cse9 (select .cse7 (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse10)))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse8) (fp.sub c_currentRoundingMode .cse2 .cse8)))) (.cse4 (let ((.cse6 (select .cse7 |c_ULTIMATE.start_main_~#min~0#1.offset|))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (and (= |c_ULTIMATE.start_main_~#max~0#1.offset| (_ bv0 32)) (= (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2) (fp.geq .cse3 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main_~t~0#1| .cse4) (= |c_ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~#min~0#1.offset| (_ bv0 32)) (fp.leq .cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (= .cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= (let ((.cse5 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2021-11-21 00:28:25,744 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (let ((.cse1 (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse2) (fp.sub roundNearestTiesToEven .cse0 .cse2)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse1)))) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0))))) is different from false [2021-11-21 00:28:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:25,779 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-21 00:28:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:28:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 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 11 [2021-11-21 00:28:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:25,783 INFO L225 Difference]: With dead ends: 26 [2021-11-21 00:28:25,784 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 00:28:25,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 292.1s TimeCoverageRelationStatistics Valid=75, Invalid=134, Unknown=33, NotChecked=570, Total=812 [2021-11-21 00:28:25,787 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:25,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 1 Unknown, 96 Unchecked, 3.8s Time] [2021-11-21 00:28:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 00:28:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-21 00:28:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-21 00:28:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-21 00:28:25,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2021-11-21 00:28:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:25,795 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-21 00:28:25,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-11-21 00:28:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-21 00:28:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:28:25,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:25,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:28:25,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:28:25,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:28:26,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1504580037, now seen corresponding path program 1 times [2021-11-21 00:28:26,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:28:26,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001023697] [2021-11-21 00:28:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:26,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:28:26,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:28:26,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:28:26,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:28:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:26,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:28:26,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:28:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:28:26,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:28:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:28:26,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:28:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001023697] [2021-11-21 00:28:26,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001023697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:26,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:26,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:28:26,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870868983] [2021-11-21 00:28:26,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:26,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:28:26,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:28:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:28:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:28:26,422 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-21 00:28:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:26,486 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-11-21 00:28:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:28:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-21 00:28:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:26,488 INFO L225 Difference]: With dead ends: 31 [2021-11-21 00:28:26,488 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 00:28:26,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:28:26,490 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:26,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:28:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 00:28:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-21 00:28:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-21 00:28:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-21 00:28:26,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-11-21 00:28:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:26,496 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-21 00:28:26,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-21 00:28:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-21 00:28:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:28:26,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:26,498 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:28:26,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:28:26,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:28:26,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:26,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 723862385, now seen corresponding path program 1 times [2021-11-21 00:28:26,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:28:26,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823224859] [2021-11-21 00:28:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:26,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:28:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:28:26,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:28:26,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f173581-5455-41d1-8bb9-44022a7a3fac/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:28:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 00:28:27,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:28:31,858 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-21 00:28:31,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 439 treesize of output 215 [2021-11-21 00:29:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:29:20,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:29:30,936 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from false [2021-11-21 00:29:32,992 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2021-11-21 00:29:47,549 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from false [2021-11-21 00:29:49,605 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from true [2021-11-21 00:30:02,085 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from false [2021-11-21 00:30:17,636 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from false [2021-11-21 00:30:19,695 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from true [2021-11-21 00:30:37,803 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|)))) is different from false [2021-11-21 00:30:39,860 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|)))) is different from true [2021-11-21 00:30:57,924 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|)) (.cse2 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse5 (let ((.cse7 (select .cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse2)))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (fp.leq |c_ULTIMATE.start_main_~t~0#1| (let ((.cse0 (select .cse1 (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse2)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) (let ((.cse3 (let ((.cse4 (let ((.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse2)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse4) (fp.sub c_currentRoundingMode .cse5 .cse4))))) (and (fp.geq .cse3 (_ +zero 8 24)) (fp.leq .cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse5))))) is different from true