./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE --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 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd ....................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE --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 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:50:54,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:50:54,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:50:54,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:50:54,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:50:54,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:50:54,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:50:54,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:50:54,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:50:54,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:50:54,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:50:54,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:50:54,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:50:54,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:50:54,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:50:54,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:50:54,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:50:54,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:50:54,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:50:54,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:50:54,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:50:54,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:50:54,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:50:54,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:50:54,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:50:54,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:50:54,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:50:54,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:50:54,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:50:54,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:50:54,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:50:54,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:50:54,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:50:54,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:50:54,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:50:54,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:50:54,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:50:54,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:50:54,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:50:54,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:50:54,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:50:54,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:50:54,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:50:54,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:50:54,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:50:54,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:50:54,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:50:54,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:50:54,625 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:50:54,625 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:50:54,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:50:54,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:50:54,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:50:54,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:50:54,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:50:54,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:50:54,627 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:50:54,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:50:54,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:50:54,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:50:54,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:50:54,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:50:54,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:50:54,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:50:54,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:50:54,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:50:54,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:50:54,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:50:54,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:50:54,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:50:54,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:50:54,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:50:54,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:50:54,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:50:54,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:50:54,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:50:54,632 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:50:54,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:50:54,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:50:54,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:50:54,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:50:54,633 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_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd [2021-10-24 09:50:54,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:50:54,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:50:55,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:50:55,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:50:55,002 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:50:55,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-24 09:50:55,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/cfc54da35/684960c8a80c4ebcb04781b94b4b3f0b/FLAG7a5dbce39 [2021-10-24 09:50:55,640 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:50:55,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-24 09:50:55,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/cfc54da35/684960c8a80c4ebcb04781b94b4b3f0b/FLAG7a5dbce39 [2021-10-24 09:50:56,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/cfc54da35/684960c8a80c4ebcb04781b94b4b3f0b [2021-10-24 09:50:56,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:50:56,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:50:56,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:50:56,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:50:56,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:50:56,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc16739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56, skipping insertion in model container [2021-10-24 09:50:56,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:50:56,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:50:56,276 WARN L228 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_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-24 09:50:56,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:50:56,291 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:50:56,337 WARN L228 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_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-24 09:50:56,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:50:56,357 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:50:56,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56 WrapperNode [2021-10-24 09:50:56,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:50:56,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:50:56,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:50:56,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:50:56,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:50:56,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:50:56,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:50:56,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:50:56,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:50:56,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:50:56,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:50:56,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:50:56,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (1/1) ... [2021-10-24 09:50:56,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:50:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:50:56,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:50:56,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:50:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:50:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:50:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 09:50:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:50:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 09:50:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:50:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:50:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:50:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:50:56,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:50:56,948 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 09:50:56,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:56 BoogieIcfgContainer [2021-10-24 09:50:56,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:50:56,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:50:56,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:50:56,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:50:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:50:56" (1/3) ... [2021-10-24 09:50:56,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425c0ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:56, skipping insertion in model container [2021-10-24 09:50:56,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:56" (2/3) ... [2021-10-24 09:50:56,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425c0ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:50:56, skipping insertion in model container [2021-10-24 09:50:56,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:56" (3/3) ... [2021-10-24 09:50:56,960 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2021-10-24 09:50:56,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:50:56,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:50:57,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:50:57,060 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 [2021-10-24 09:50:57,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:50:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:50:57,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:57,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:57,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1750206788, now seen corresponding path program 1 times [2021-10-24 09:50:57,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:57,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102788876] [2021-10-24 09:50:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:57,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:57,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:50:57,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102788876] [2021-10-24 09:50:57,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102788876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:57,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:57,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:50:57,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803317274] [2021-10-24 09:50:57,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:50:57,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:50:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:50:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:50:57,355 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 09:50:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:57,375 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-10-24 09:50:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:50:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-24 09:50:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:57,386 INFO L225 Difference]: With dead ends: 35 [2021-10-24 09:50:57,387 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 09:50:57,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:50:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 09:50:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-24 09:50:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2021-10-24 09:50:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-24 09:50:57,426 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-10-24 09:50:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:57,426 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-24 09:50:57,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 09:50:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-24 09:50:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:50:57,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:57,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:57,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:50:57,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:50:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1144122849, now seen corresponding path program 1 times [2021-10-24 09:50:57,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:50:57,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525032231] [2021-10-24 09:50:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:57,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:50:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:50:57,499 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:50:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:50:57,621 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:50:57,621 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:50:57,623 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:50:57,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:50:57,632 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:50:57,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:50:57 BoogieIcfgContainer [2021-10-24 09:50:57,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:50:57,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:50:57,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:50:57,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:50:57,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:50:56" (3/4) ... [2021-10-24 09:50:57,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:50:57,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:50:57,678 INFO L168 Benchmark]: Toolchain (without parser) took 1666.43 ms. Allocated memory is still 119.5 MB. Free memory was 83.5 MB in the beginning and 91.3 MB in the end (delta: -7.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:50:57,679 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:50:57,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.60 ms. Allocated memory is still 119.5 MB. Free memory was 83.2 MB in the beginning and 94.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:50:57,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.72 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:50:57,689 INFO L168 Benchmark]: Boogie Preprocessor took 57.88 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:50:57,690 INFO L168 Benchmark]: RCFGBuilder took 474.66 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 79.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:50:57,691 INFO L168 Benchmark]: TraceAbstraction took 716.97 ms. Allocated memory is still 119.5 MB. Free memory was 78.8 MB in the beginning and 91.9 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:50:57,691 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 91.3 MB in the end (delta: 605.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:50:57,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.60 ms. Allocated memory is still 119.5 MB. Free memory was 83.2 MB in the beginning and 94.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.72 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.88 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 474.66 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 79.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 716.97 ms. Allocated memory is still 119.5 MB. Free memory was 78.8 MB in the beginning and 91.9 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.75 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 91.3 MB in the end (delta: 605.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L59] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 584.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.4ms, AutomataDifference: 60.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 89.4ms SatisfiabilityAnalysisTime, 70.1ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-10-24 09:50:57,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:51:00,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:51:00,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:51:00,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:51:00,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:51:00,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:51:00,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:51:00,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:51:00,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:51:00,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:51:00,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:51:00,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:51:00,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:51:00,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:51:00,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:51:00,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:51:00,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:51:00,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:51:00,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:51:00,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:51:00,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:51:00,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:51:00,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:51:00,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:51:00,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:51:00,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:51:00,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:51:00,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:51:00,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:51:00,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:51:00,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:51:00,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:51:00,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:51:00,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:51:00,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:51:00,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:51:00,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:51:00,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:51:00,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:51:00,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:51:00,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:51:00,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:51:00,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:51:00,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:51:00,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:51:00,431 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:51:00,431 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:51:00,431 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:51:00,431 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:51:00,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:51:00,432 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:51:00,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:51:00,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:51:00,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:51:00,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:51:00,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:51:00,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:51:00,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:51:00,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:51:00,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:51:00,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:51:00,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:51:00,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:51:00,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:51:00,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:51:00,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:51:00,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:51:00,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:51:00,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:51:00,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:51:00,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:51:00,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:51:00,439 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:51:00,440 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:00,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:51:00,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:51:00,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:51:00,441 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_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55d78fe353fd0931b2d447fd45670a80ea73f6385110d8a7ff7bce3171c541bd [2021-10-24 09:51:00,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:51:00,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:51:00,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:51:00,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:51:00,915 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:51:00,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-24 09:51:01,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/5f798b946/7a04ad5c3bed45ce873541ec9616a021/FLAGb04306de1 [2021-10-24 09:51:01,639 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:51:01,641 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-24 09:51:01,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/5f798b946/7a04ad5c3bed45ce873541ec9616a021/FLAGb04306de1 [2021-10-24 09:51:01,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/data/5f798b946/7a04ad5c3bed45ce873541ec9616a021 [2021-10-24 09:51:01,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:51:01,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:51:01,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:01,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:51:01,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:51:01,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:01" (1/1) ... [2021-10-24 09:51:01,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0e8b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:01, skipping insertion in model container [2021-10-24 09:51:01,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:01" (1/1) ... [2021-10-24 09:51:02,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:51:02,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:51:02,176 WARN L228 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_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-24 09:51:02,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:02,195 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:51:02,222 WARN L228 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_46617af2-9b4b-4268-888c-75e777eaf7c9/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-24 09:51:02,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:02,240 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:51:02,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02 WrapperNode [2021-10-24 09:51:02,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:02,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:51:02,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:51:02,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:51:02,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:51:02,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:51:02,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:51:02,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:51:02,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:51:02,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:51:02,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:51:02,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:51:02,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (1/1) ... [2021-10-24 09:51:02,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:51:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:51:02,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:51:02,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:51:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:51:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:51:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-24 09:51:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:51:02,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:51:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:51:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-24 09:51:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:51:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:51:02,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:51:02,802 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 09:51:02,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:02 BoogieIcfgContainer [2021-10-24 09:51:02,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:51:02,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:51:02,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:51:02,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:51:02,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:51:01" (1/3) ... [2021-10-24 09:51:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c53911a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:02, skipping insertion in model container [2021-10-24 09:51:02,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:02" (2/3) ... [2021-10-24 09:51:02,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c53911a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:02, skipping insertion in model container [2021-10-24 09:51:02,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:02" (3/3) ... [2021-10-24 09:51:02,813 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2021-10-24 09:51:02,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:51:02,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:51:02,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:51:02,872 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 [2021-10-24 09:51:02,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:51:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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) [2021-10-24 09:51:02,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:51:02,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:02,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:02,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2021-10-24 09:51:02,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:02,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874353163] [2021-10-24 09:51:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:02,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:02,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:03,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:51:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:03,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:51:03,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:03,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:03,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:03,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874353163] [2021-10-24 09:51:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874353163] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:03,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:03,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:51:03,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874441651] [2021-10-24 09:51:03,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:51:03,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:51:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:51:03,301 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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) [2021-10-24 09:51:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:03,316 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2021-10-24 09:51:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:51:03,318 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 [2021-10-24 09:51:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:03,326 INFO L225 Difference]: With dead ends: 40 [2021-10-24 09:51:03,326 INFO L226 Difference]: Without dead ends: 18 [2021-10-24 09:51:03,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:51:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-24 09:51:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-24 09:51:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-10-24 09:51:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-24 09:51:03,359 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-10-24 09:51:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:03,359 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-24 09:51:03,360 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) [2021-10-24 09:51:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-24 09:51:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:51:03,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:03,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:03,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:03,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:03,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2021-10-24 09:51:03,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:03,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811795831] [2021-10-24 09:51:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:03,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:03,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:03,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:51:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:03,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:51:03,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:03,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:03,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:03,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811795831] [2021-10-24 09:51:03,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811795831] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:03,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:03,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-24 09:51:03,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458623791] [2021-10-24 09:51:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:51:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:51:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:51:03,968 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-24 09:51:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:04,027 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-24 09:51:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:51:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 [2021-10-24 09:51:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:04,030 INFO L225 Difference]: With dead ends: 29 [2021-10-24 09:51:04,030 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 09:51:04,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:51:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 09:51:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-10-24 09:51:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-10-24 09:51:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-24 09:51:04,053 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2021-10-24 09:51:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:04,053 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-24 09:51:04,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-24 09:51:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-24 09:51:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 09:51:04,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:04,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:04,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:04,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:04,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:04,285 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2021-10-24 09:51:04,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:04,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253413995] [2021-10-24 09:51:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:04,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:04,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:04,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:51:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:04,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:51:04,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:04,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:04,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:04,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253413995] [2021-10-24 09:51:04,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253413995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:04,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:04,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-24 09:51:04,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554105893] [2021-10-24 09:51:04,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:51:04,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:04,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:51:04,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:51:04,724 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-10-24 09:51:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:05,093 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-24 09:51:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:51:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 09:51:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:05,096 INFO L225 Difference]: With dead ends: 24 [2021-10-24 09:51:05,097 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 09:51:05,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 369.2ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:51:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 09:51:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-24 09:51:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-24 09:51:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-24 09:51:05,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2021-10-24 09:51:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:05,106 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-24 09:51:05,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-10-24 09:51:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-24 09:51:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:51:05,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:05,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:05,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:05,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:05,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:05,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2021-10-24 09:51:05,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:05,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148938928] [2021-10-24 09:51:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:05,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:05,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:05,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:51:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:05,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:51:05,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:05,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:05,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:05,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148938928] [2021-10-24 09:51:05,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148938928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:05,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:05,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 09:51:05,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391219121] [2021-10-24 09:51:05,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:51:05,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:51:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:51:05,803 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-10-24 09:51:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:05,899 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-24 09:51:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:51:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-24 09:51:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:05,900 INFO L225 Difference]: With dead ends: 17 [2021-10-24 09:51:05,900 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:51:05,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 202.4ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:51:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:51:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:51:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-24 09:51:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:51:05,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-24 09:51:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:05,902 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:51:05,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-10-24 09:51:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:51:05,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:51:05,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:51:05,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:06,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:06,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:51:06,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:51:06,280 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 41) no Hoare annotation was computed. [2021-10-24 09:51:06,281 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2021-10-24 09:51:06,281 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 09:51:06,281 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2021-10-24 09:51:06,281 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2021-10-24 09:51:06,281 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:51:06,281 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 09:51:06,282 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 37) no Hoare annotation was computed. [2021-10-24 09:51:06,282 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2021-10-24 09:51:06,282 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2021-10-24 09:51:06,282 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2021-10-24 09:51:06,282 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2021-10-24 09:51:06,283 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:51:06,283 INFO L857 garLoopResultBuilder]: For program point L58(lines 58 61) no Hoare annotation was computed. [2021-10-24 09:51:06,283 INFO L853 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (_ bv127 32) ULTIMATE.start_trunc_float_~exponent_less_127~0) (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-24 09:51:06,283 INFO L853 garLoopResultBuilder]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (_ bv127 32) ULTIMATE.start_trunc_float_~exponent_less_127~0) (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x))) [2021-10-24 09:51:06,284 INFO L860 garLoopResultBuilder]: At program point L63(lines 48 64) the Hoare annotation is: true [2021-10-24 09:51:06,284 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-24 09:51:06,284 INFO L857 garLoopResultBuilder]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2021-10-24 09:51:06,284 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2021-10-24 09:51:06,284 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-24 09:51:06,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:51:06,302 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,303 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,312 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,313 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,313 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,314 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:51:06 BoogieIcfgContainer [2021-10-24 09:51:06,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:51:06,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:51:06,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:51:06,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:51:06,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:02" (3/4) ... [2021-10-24 09:51:06,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:51:06,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-24 09:51:06,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 09:51:06,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:51:06,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:51:06,378 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x) [2021-10-24 09:51:06,383 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result [2021-10-24 09:51:06,405 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:51:06,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:51:06,414 INFO L168 Benchmark]: Toolchain (without parser) took 4429.74 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 48.0 MB in the end (delta: 998.7 kB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,415 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:51:06,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.98 ms. Allocated memory is still 71.3 MB. Free memory was 48.7 MB in the beginning and 38.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.31 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 53.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,417 INFO L168 Benchmark]: Boogie Preprocessor took 32.27 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:51:06,417 INFO L168 Benchmark]: RCFGBuilder took 428.85 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 40.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,418 INFO L168 Benchmark]: TraceAbstraction took 3509.67 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 40.4 MB in the beginning and 50.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,420 INFO L168 Benchmark]: Witness Printer took 95.21 ms. Allocated memory is still 98.6 MB. Free memory was 50.8 MB in the beginning and 48.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:06,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.98 ms. Allocated memory is still 71.3 MB. Free memory was 48.7 MB in the beginning and 38.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.31 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 53.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.27 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 428.85 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 40.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3509.67 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 40.4 MB in the beginning and 50.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Witness Printer took 95.21 ms. Allocated memory is still 98.6 MB. Free memory was 50.8 MB in the beginning and 48.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3429.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 32.0ms, AutomataDifference: 584.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 156.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 39 SDslu, 86 SDs, 0 SdLazy, 45 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 617.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 54 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 69.7ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 79.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 58.9ms SsaConstructionTime, 191.0ms SatisfiabilityAnalysisTime, 1145.4ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 283 SizeOfPredicates, 21 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2021-10-24 09:51:06,435 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant [2021-10-24 09:51:06,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-24 09:51:06,438 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-24 09:51:06,439 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-24 09:51:06,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46617af2-9b4b-4268-888c-75e777eaf7c9/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...