./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH --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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:17,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:17,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:17,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:17,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:17,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:17,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:17,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:17,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:17,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:17,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:17,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:17,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:17,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:17,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:17,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:17,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:17,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:17,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:17,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:17,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:17,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:17,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:17,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:17,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:17,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:17,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:17,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:17,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:17,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:17,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:17,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:17,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:17,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:17,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:17,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:17,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:17,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:17,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:17,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:17,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:17,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:25:17,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:17,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:17,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:17,645 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:17,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:17,646 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:17,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:25:17,646 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:17,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:17,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:25:17,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:25:17,653 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:17,653 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:25:17,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:25:17,654 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:25:17,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:17,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:17,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:25:17,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:17,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:17,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:17,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:17,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:17,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:17,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:17,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:17,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:17,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:17,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:17,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:17,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:17,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:17,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:17,661 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:25:17,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:25:17,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:17,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:17,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:17,662 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2021-11-03 04:25:17,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:17,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:17,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:17,989 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:17,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-03 04:25:18,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/35cd629d6/dbf5d96b4bae461a8e4f59a79e59f88e/FLAG5774c1280 [2021-11-03 04:25:18,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:18,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-03 04:25:18,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/35cd629d6/dbf5d96b4bae461a8e4f59a79e59f88e/FLAG5774c1280 [2021-11-03 04:25:18,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/35cd629d6/dbf5d96b4bae461a8e4f59a79e59f88e [2021-11-03 04:25:18,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:18,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:18,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:18,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:18,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:18,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:18" (1/1) ... [2021-11-03 04:25:18,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425bfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:18, skipping insertion in model container [2021-11-03 04:25:18,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:18" (1/1) ... [2021-11-03 04:25:18,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:18,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:19,118 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-03 04:25:19,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:19,132 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:25:19,160 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-03 04:25:19,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:19,176 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:25:19,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19 WrapperNode [2021-11-03 04:25:19,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:19,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:19,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:25:19,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:25:19,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:19,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:25:19,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:25:19,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:25:19,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:25:19,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:25:19,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:25:19,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:25:19,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (1/1) ... [2021-11-03 04:25:19,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:19,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:25:19,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:25:19,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:25:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:25:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:25:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 04:25:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:25:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:25:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:25:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:25:20,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:25:20,100 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 04:25:20,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:20 BoogieIcfgContainer [2021-11-03 04:25:20,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:25:20,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:25:20,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:25:20,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:25:20,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:25:18" (1/3) ... [2021-11-03 04:25:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:20, skipping insertion in model container [2021-11-03 04:25:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:19" (2/3) ... [2021-11-03 04:25:20,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:20, skipping insertion in model container [2021-11-03 04:25:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:20" (3/3) ... [2021-11-03 04:25:20,117 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-11-03 04:25:20,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:25:20,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:25:20,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:25:20,175 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:25:20,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:25:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) [2021-11-03 04:25:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:25:20,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:20,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:20,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash -844709066, now seen corresponding path program 1 times [2021-11-03 04:25:20,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:20,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019116561] [2021-11-03 04:25:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:20,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:20,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:25:20,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019116561] [2021-11-03 04:25:20,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019116561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:20,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:20,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:25:20,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358661349] [2021-11-03 04:25:20,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:25:20,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:25:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:25:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:25:20,365 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:20,378 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-03 04:25:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:25:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-03 04:25:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:20,387 INFO L225 Difference]: With dead ends: 27 [2021-11-03 04:25:20,387 INFO L226 Difference]: Without dead ends: 12 [2021-11-03 04:25:20,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:25:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-03 04:25:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-03 04:25:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-03 04:25:20,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-03 04:25:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:20,419 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-03 04:25:20,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-03 04:25:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:25:20,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:20,420 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:20,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:25:20,421 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:20,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:20,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1253567085, now seen corresponding path program 1 times [2021-11-03 04:25:20,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:25:20,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717426202] [2021-11-03 04:25:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:20,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:25:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:25:20,474 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:25:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:25:20,568 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:25:20,569 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:25:20,572 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:25:20,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:25:20,577 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:25:20,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:25:20,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:25:20 BoogieIcfgContainer [2021-11-03 04:25:20,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:25:20,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:25:20,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:25:20,621 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:25:20,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:20" (3/4) ... [2021-11-03 04:25:20,624 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:25:20,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:25:20,626 INFO L168 Benchmark]: Toolchain (without parser) took 1756.55 ms. Allocated memory is still 130.0 MB. Free memory was 89.5 MB in the beginning and 103.7 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:20,627 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:20,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.01 ms. Allocated memory is still 130.0 MB. Free memory was 89.3 MB in the beginning and 102.5 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:20,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 130.0 MB. Free memory was 102.5 MB in the beginning and 100.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:20,629 INFO L168 Benchmark]: Boogie Preprocessor took 63.53 ms. Allocated memory is still 130.0 MB. Free memory was 100.5 MB in the beginning and 99.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:20,630 INFO L168 Benchmark]: RCFGBuilder took 789.08 ms. Allocated memory is still 130.0 MB. Free memory was 99.5 MB in the beginning and 76.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:20,631 INFO L168 Benchmark]: TraceAbstraction took 515.29 ms. Allocated memory is still 130.0 MB. Free memory was 75.9 MB in the beginning and 104.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:20,631 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 103.7 MB in the end (delta: 301.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:20,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory is still 105.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.01 ms. Allocated memory is still 130.0 MB. Free memory was 89.3 MB in the beginning and 102.5 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 130.0 MB. Free memory was 102.5 MB in the beginning and 100.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.53 ms. Allocated memory is still 130.0 MB. Free memory was 100.5 MB in the beginning and 99.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 789.08 ms. Allocated memory is still 130.0 MB. Free memory was 99.5 MB in the beginning and 76.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 515.29 ms. Allocated memory is still 130.0 MB. Free memory was 75.9 MB in the beginning and 104.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.25 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 103.7 MB in the end (delta: 301.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:25:20,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH --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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:23,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:23,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:23,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:23,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:23,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:23,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:23,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:23,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:23,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:23,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:23,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:23,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:23,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:23,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:23,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:23,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:23,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:23,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:23,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:23,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:23,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:23,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:23,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:23,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:23,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:23,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:23,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:23,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:23,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:23,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:23,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:23,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:23,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:23,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:23,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:23,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:23,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:23,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:23,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:23,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:23,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:25:23,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:23,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:23,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:23,369 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:23,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:23,370 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:23,370 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:23,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:23,370 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:23,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:23,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:23,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:23,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:23,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:23,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:23,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:23,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:23,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:25:23,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:25:23,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:23,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:23,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:23,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:23,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:23,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:25:23,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:23,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:23,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:23,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:23,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:23,376 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:25:23,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:25:23,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:23,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:23,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:23,377 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2021-11-03 04:25:23,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:23,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:23,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:23,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:23,798 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:23,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-03 04:25:23,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/48fd4c695/2e3e9e92961b4b46a172455ecc9e6e31/FLAGf26b3a9bc [2021-11-03 04:25:24,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:24,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-03 04:25:24,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/48fd4c695/2e3e9e92961b4b46a172455ecc9e6e31/FLAGf26b3a9bc [2021-11-03 04:25:24,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/data/48fd4c695/2e3e9e92961b4b46a172455ecc9e6e31 [2021-11-03 04:25:24,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:24,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:24,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:24,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:24,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:24,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:24" (1/1) ... [2021-11-03 04:25:24,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f93617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:24, skipping insertion in model container [2021-11-03 04:25:24,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:24" (1/1) ... [2021-11-03 04:25:24,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:24,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:24,983 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-03 04:25:24,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:25,007 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:25:25,055 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_9981dedb-0646-4a0a-b183-6ad2b4b2e776/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-03 04:25:25,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:25,082 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:25:25,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25 WrapperNode [2021-11-03 04:25:25,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:25,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:25,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:25:25,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:25:25,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:25,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:25:25,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:25:25,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:25:25,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:25:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:25:25,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:25:25,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:25:25,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (1/1) ... [2021-11-03 04:25:25,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:25,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:25:25,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:25:25,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:25:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-03 04:25:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:25:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:25:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:25:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:25:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:25:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:25:25,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:25:25,642 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 04:25:25,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:25 BoogieIcfgContainer [2021-11-03 04:25:25,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:25:25,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:25:25,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:25:25,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:25:25,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:25:24" (1/3) ... [2021-11-03 04:25:25,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2e45fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:25, skipping insertion in model container [2021-11-03 04:25:25,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:25" (2/3) ... [2021-11-03 04:25:25,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2e45fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:25, skipping insertion in model container [2021-11-03 04:25:25,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:25" (3/3) ... [2021-11-03 04:25:25,653 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-11-03 04:25:25,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:25:25,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:25:25,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:25:25,713 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:25:25,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:25:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:25:25,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:25,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:25,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-11-03 04:25:25,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:25,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793947467] [2021-11-03 04:25:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:25,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:25,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:25,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:25,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:25:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:25,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:25:25,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:25,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:26,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:26,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793947467] [2021-11-03 04:25:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793947467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:26,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:26,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:25:26,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504626884] [2021-11-03 04:25:26,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:25:26,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:25:26,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:25:26,050 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:26,067 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-03 04:25:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:25:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:25:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:26,078 INFO L225 Difference]: With dead ends: 54 [2021-11-03 04:25:26,078 INFO L226 Difference]: Without dead ends: 25 [2021-11-03 04:25:26,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:25:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-03 04:25:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-03 04:25:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-03 04:25:26,113 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-11-03 04:25:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:26,114 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-03 04:25:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-11-03 04:25:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:25:26,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:26,115 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:26,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:26,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:26,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-11-03 04:25:26,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:26,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472498261] [2021-11-03 04:25:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:26,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:26,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:26,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:26,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:25:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:26,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:26,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:26,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:26,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:26,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472498261] [2021-11-03 04:25:26,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472498261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:26,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:26,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:25:26,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899655248] [2021-11-03 04:25:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:25:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:25:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:25:26,548 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-03 04:25:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:26,640 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-11-03 04:25:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:25:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2021-11-03 04:25:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:26,642 INFO L225 Difference]: With dead ends: 52 [2021-11-03 04:25:26,642 INFO L226 Difference]: Without dead ends: 47 [2021-11-03 04:25:26,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:25:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-03 04:25:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-03 04:25:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-03 04:25:26,663 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-11-03 04:25:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:26,663 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-03 04:25:26,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-03 04:25:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-03 04:25:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:25:26,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:26,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:26,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:26,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:26,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-11-03 04:25:26,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:26,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498922160] [2021-11-03 04:25:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:26,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:26,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:26,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:26,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:25:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:27,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:25:27,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:27,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:27,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:27,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498922160] [2021-11-03 04:25:27,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498922160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:27,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:27,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 04:25:27,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076608417] [2021-11-03 04:25:27,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:25:27,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:25:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:25:27,536 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:28,505 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-03 04:25:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:25:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:25:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:28,512 INFO L225 Difference]: With dead ends: 36 [2021-11-03 04:25:28,512 INFO L226 Difference]: Without dead ends: 27 [2021-11-03 04:25:28,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:25:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-03 04:25:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-03 04:25:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-03 04:25:28,518 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-03 04:25:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:28,519 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-03 04:25:28,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-03 04:25:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:25:28,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:28,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:28,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:28,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-11-03 04:25:28,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:28,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15250579] [2021-11-03 04:25:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:28,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:28,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:28,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:25:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:28,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:28,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:28,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:28,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15250579] [2021-11-03 04:25:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15250579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:28,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:25:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076993259] [2021-11-03 04:25:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:25:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:25:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:25:28,954 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-11-03 04:25:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:29,056 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-03 04:25:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:25:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 16 [2021-11-03 04:25:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:29,059 INFO L225 Difference]: With dead ends: 52 [2021-11-03 04:25:29,060 INFO L226 Difference]: Without dead ends: 47 [2021-11-03 04:25:29,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:25:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-03 04:25:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-03 04:25:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-03 04:25:29,066 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-11-03 04:25:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:29,066 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-03 04:25:29,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-11-03 04:25:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-03 04:25:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:25:29,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:29,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:29,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:29,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:29,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-11-03 04:25:29,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:29,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062340766] [2021-11-03 04:25:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:29,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:29,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:29,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:29,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:25:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:29,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:25:29,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:29,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:30,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:30,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062340766] [2021-11-03 04:25:30,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062340766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:30,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:30,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-03 04:25:30,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005849679] [2021-11-03 04:25:30,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:25:30,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:25:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:25:30,041 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:30,794 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-11-03 04:25:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:25:30,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 18 [2021-11-03 04:25:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:30,800 INFO L225 Difference]: With dead ends: 32 [2021-11-03 04:25:30,800 INFO L226 Difference]: Without dead ends: 23 [2021-11-03 04:25:30,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:25:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-03 04:25:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-03 04:25:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-03 04:25:30,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-11-03 04:25:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:30,806 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-03 04:25:30,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-03 04:25:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:25:30,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:30,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:30,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:25:31,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:31,034 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:25:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:31,034 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-11-03 04:25:31,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:31,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798318681] [2021-11-03 04:25:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:31,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:31,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:31,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:31,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:25:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:31,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:25:31,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:31,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:31,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:31,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798318681] [2021-11-03 04:25:31,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798318681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:31,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:31,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 04:25:31,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379831062] [2021-11-03 04:25:31,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:25:31,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:25:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:25:31,617 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:31,942 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-03 04:25:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:25:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-03 04:25:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:31,943 INFO L225 Difference]: With dead ends: 23 [2021-11-03 04:25:31,944 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:25:31,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:25:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:25:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:25:31,959 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) [2021-11-03 04:25:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:25:31,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-03 04:25:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:31,960 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:25:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:25:31,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:25:31,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:25:31,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:32,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:32,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:25:32,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-11-03 04:25:32,558 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2021-11-03 04:25:32,558 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-11-03 04:25:32,559 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-03 04:25:32,559 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2021-11-03 04:25:32,560 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-11-03 04:25:32,560 INFO L857 garLoopResultBuilder]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2021-11-03 04:25:32,560 INFO L853 garLoopResultBuilder]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-03 04:25:32,560 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-03 04:25:32,560 INFO L857 garLoopResultBuilder]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2021-11-03 04:25:32,560 INFO L853 garLoopResultBuilder]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-03 04:25:32,560 INFO L853 garLoopResultBuilder]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32)))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2021-11-03 04:25:32,561 INFO L860 garLoopResultBuilder]: At program point L72(lines 55 73) the Hoare annotation is: true [2021-11-03 04:25:32,561 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-11-03 04:25:32,561 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2021-11-03 04:25:32,561 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-03 04:25:32,561 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-11-03 04:25:32,561 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2021-11-03 04:25:32,566 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-03 04:25:32,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:25:32,576 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,577 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:25:32 BoogieIcfgContainer [2021-11-03 04:25:32,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:25:32,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:25:32,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:25:32,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:25:32,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:25" (3/4) ... [2021-11-03 04:25:32,597 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:25:32,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-03 04:25:32,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:25:32,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 04:25:32,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:25:32,656 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-11-03 04:25:32,657 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-11-03 04:25:32,660 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2021-11-03 04:25:32,697 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:25:32,697 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:25:32,699 INFO L168 Benchmark]: Toolchain (without parser) took 7989.68 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 48.4 MB in the beginning and 75.1 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:32,699 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 64.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:32,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.76 ms. Allocated memory is still 83.9 MB. Free memory was 48.2 MB in the beginning and 60.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:32,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.88 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:32,701 INFO L168 Benchmark]: Boogie Preprocessor took 60.35 ms. Allocated memory is still 83.9 MB. Free memory was 58.9 MB in the beginning and 57.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:32,701 INFO L168 Benchmark]: RCFGBuilder took 428.26 ms. Allocated memory is still 83.9 MB. Free memory was 57.4 MB in the beginning and 44.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:32,701 INFO L168 Benchmark]: TraceAbstraction took 6945.59 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 43.9 MB in the beginning and 79.3 MB in the end (delta: -35.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:32,702 INFO L168 Benchmark]: Witness Printer took 105.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 75.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:32,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 64.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.76 ms. Allocated memory is still 83.9 MB. Free memory was 48.2 MB in the beginning and 60.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.88 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.35 ms. Allocated memory is still 83.9 MB. Free memory was 58.9 MB in the beginning and 57.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 428.26 ms. Allocated memory is still 83.9 MB. Free memory was 57.4 MB in the beginning and 44.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6945.59 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 43.9 MB in the beginning and 79.3 MB in the end (delta: -35.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 105.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 75.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 68]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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: 18]: Loop Invariant [2021-11-03 04:25:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,715 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 46]: Loop Invariant [2021-11-03 04:25:32,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-03 04:25:32,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:25:32,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9981dedb-0646-4a0a-b183-6ad2b4b2e776/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE