./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:22:17,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:22:17,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:22:17,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:22:17,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:22:17,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:22:17,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:22:17,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:22:17,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:22:17,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:22:17,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:22:17,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:22:17,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:22:17,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:22:17,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:22:17,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:22:17,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:22:17,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:22:17,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:22:17,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:22:17,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:22:17,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:22:17,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:22:17,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:22:17,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:22:17,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:22:17,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:22:17,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:22:17,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:22:17,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:22:17,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:22:17,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:22:17,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:22:17,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:22:17,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:22:17,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:22:17,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:22:17,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:22:17,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:22:17,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:22:17,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:22:17,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:22:17,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:22:17,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:22:17,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:22:17,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:22:17,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:22:17,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:22:17,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:22:17,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:22:17,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:22:17,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:22:17,656 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:22:17,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:22:17,657 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:22:17,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:22:17,658 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:22:17,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:22:17,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:22:17,659 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:22:17,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:22:17,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:22:17,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:22:17,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:22:17,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:22:17,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:22:17,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:22:17,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:22:17,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:22:17,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:22:17,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:22:17,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:22:17,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:22:17,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:22:17,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:17,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:22:17,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:22:17,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:22:17,667 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:22:17,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:22:17,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:22:17,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:22:17,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:22:17,669 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_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-11-23 02:22:17,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:22:18,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:22:18,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:22:18,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:22:18,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:22:18,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 02:22:18,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/b4e3a579e/09e76cc5de934412a9a811782be06625/FLAG2cad7c461 [2021-11-23 02:22:18,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:22:18,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 02:22:18,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/b4e3a579e/09e76cc5de934412a9a811782be06625/FLAG2cad7c461 [2021-11-23 02:22:19,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/b4e3a579e/09e76cc5de934412a9a811782be06625 [2021-11-23 02:22:19,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:22:19,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:22:19,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:19,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:22:19,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:22:19,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dbd64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19, skipping insertion in model container [2021-11-23 02:22:19,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:22:19,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:22:19,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 02:22:19,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:19,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:22:19,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 02:22:19,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:19,350 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:22:19,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19 WrapperNode [2021-11-23 02:22:19,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:19,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:19,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:22:19,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:22:19,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,391 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-11-23 02:22:19,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:19,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:22:19,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:22:19,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:22:19,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:22:19,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:22:19,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:22:19,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:22:19,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (1/1) ... [2021-11-23 02:22:19,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:19,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:22:19,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:22:19,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:22:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:22:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:22:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:22:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-23 02:22:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-23 02:22:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 02:22:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:22:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:22:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:22:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:22:19,627 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:22:19,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:22:19,838 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:22:19,945 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:22:19,945 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:22:19,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:19 BoogieIcfgContainer [2021-11-23 02:22:19,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:22:19,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:22:19,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:22:19,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:22:19,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:19" (1/3) ... [2021-11-23 02:22:19,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d1cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:19, skipping insertion in model container [2021-11-23 02:22:19,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19" (2/3) ... [2021-11-23 02:22:19,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d1cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:19, skipping insertion in model container [2021-11-23 02:22:19,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:19" (3/3) ... [2021-11-23 02:22:19,979 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-11-23 02:22:19,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:22:19,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:22:20,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:22:20,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:22:20,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:22:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:22:20,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:20,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:20,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash 428685965, now seen corresponding path program 1 times [2021-11-23 02:22:20,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:22:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603526212] [2021-11-23 02:22:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:20,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:22:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:20,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:22:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603526212] [2021-11-23 02:22:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603526212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:20,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:20,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:22:20,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72611738] [2021-11-23 02:22:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:20,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:22:20,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:22:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:22:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:22:20,295 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:22:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:20,355 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-11-23 02:22:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:22:20,358 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 02:22:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:20,366 INFO L225 Difference]: With dead ends: 40 [2021-11-23 02:22:20,367 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 02:22:20,370 INFO L932 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 [2021-11-23 02:22:20,375 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:20,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 02:22:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 02:22:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 02:22:20,418 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-23 02:22:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:20,419 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 02:22:20,419 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:22:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 02:22:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:22:20,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:20,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:20,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:22:20,422 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:20,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash 405131534, now seen corresponding path program 1 times [2021-11-23 02:22:20,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:22:20,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712066338] [2021-11-23 02:22:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:20,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:22:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:22:20,483 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:22:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:22:20,549 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:22:20,549 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:22:20,551 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:22:20,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:22:20,558 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:22:20,562 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:22:20,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:22:20 BoogieIcfgContainer [2021-11-23 02:22:20,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:22:20,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:22:20,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:22:20,592 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:22:20,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:19" (3/4) ... [2021-11-23 02:22:20,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:22:20,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:22:20,598 INFO L158 Benchmark]: Toolchain (without parser) took 1569.48ms. Allocated memory is still 132.1MB. Free memory was 98.7MB in the beginning and 61.8MB in the end (delta: 36.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-23 02:22:20,599 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 90.2MB. Free memory was 46.8MB in the beginning and 46.7MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:20,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.00ms. Allocated memory is still 132.1MB. Free memory was 98.6MB in the beginning and 107.0MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:22:20,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.09ms. Allocated memory is still 132.1MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:22:20,601 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 132.1MB. Free memory was 105.4MB in the beginning and 104.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:20,602 INFO L158 Benchmark]: RCFGBuilder took 526.24ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 89.1MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 02:22:20,603 INFO L158 Benchmark]: TraceAbstraction took 631.54ms. Allocated memory is still 132.1MB. Free memory was 88.7MB in the beginning and 61.8MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 02:22:20,603 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 132.1MB. Free memory is still 61.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:20,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 90.2MB. Free memory was 46.8MB in the beginning and 46.7MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.00ms. Allocated memory is still 132.1MB. Free memory was 98.6MB in the beginning and 107.0MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.09ms. Allocated memory is still 132.1MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 132.1MB. Free memory was 105.4MB in the beginning and 104.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 526.24ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 89.1MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 631.54ms. Allocated memory is still 132.1MB. Free memory was 88.7MB in the beginning and 61.8MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 132.1MB. Free memory is still 61.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 87]: 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 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918722] [L26] __uint32_t msw, lsw; VAL [\old(x)=4293918722, x=4293918722] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918722, \old(y)=0, __fpclassify_double(x)=0, x=4293918722, y=0] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4293918722, \old(y)=0, \result=0, x=4293918722, y=0] [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4293918722, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0, x=4293918722, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=21occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:22:20,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:22:23,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:22:23,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:22:23,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:22:23,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:22:23,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:22:23,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:22:23,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:22:23,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:22:23,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:22:23,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:22:23,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:22:23,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:22:23,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:22:23,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:22:23,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:22:23,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:22:23,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:22:23,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:22:23,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:22:23,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:22:23,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:22:23,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:22:23,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:22:23,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:22:23,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:22:23,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:22:23,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:22:23,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:22:23,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:22:23,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:22:23,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:22:23,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:22:23,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:22:23,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:22:23,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:22:23,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:22:23,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:22:23,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:22:23,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:22:23,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:22:23,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:22:23,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:22:23,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:22:23,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:22:23,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:22:23,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:22:23,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:22:23,630 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:22:23,630 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:22:23,630 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:22:23,630 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:22:23,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:22:23,632 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:22:23,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:22:23,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:22:23,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:22:23,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:22:23,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:22:23,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:22:23,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:22:23,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:22:23,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:22:23,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:22:23,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:22:23,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:22:23,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:22:23,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:22:23,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:22:23,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:22:23,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:22:23,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:23,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:22:23,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:22:23,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:22:23,638 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:22:23,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:22:23,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:22:23,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:22:23,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:22:23,639 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_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-11-23 02:22:24,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:22:24,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:22:24,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:22:24,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:22:24,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:22:24,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 02:22:24,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/fcfbe7237/bf3fea76ee0c4dbfb025139c43ffa517/FLAGb8ee610c7 [2021-11-23 02:22:24,850 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:22:24,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-11-23 02:22:24,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/fcfbe7237/bf3fea76ee0c4dbfb025139c43ffa517/FLAGb8ee610c7 [2021-11-23 02:22:25,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/data/fcfbe7237/bf3fea76ee0c4dbfb025139c43ffa517 [2021-11-23 02:22:25,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:22:25,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:22:25,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:25,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:22:25,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:22:25,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff3b285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25, skipping insertion in model container [2021-11-23 02:22:25,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:22:25,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:22:25,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 02:22:25,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:25,433 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:22:25,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-11-23 02:22:25,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:25,485 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:22:25,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25 WrapperNode [2021-11-23 02:22:25,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:25,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:25,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:22:25,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:22:25,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,554 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-11-23 02:22:25,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:25,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:22:25,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:22:25,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:22:25,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:22:25,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:22:25,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:22:25,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:22:25,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (1/1) ... [2021-11-23 02:22:25,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:22:25,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:22:25,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:22:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:22:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 02:22:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:22:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:22:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-23 02:22:25,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-23 02:22:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:22:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:22:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:22:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:22:25,884 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:22:25,886 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:22:26,166 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:22:26,172 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:22:26,173 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:22:26,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:26 BoogieIcfgContainer [2021-11-23 02:22:26,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:22:26,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:22:26,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:22:26,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:22:26,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:25" (1/3) ... [2021-11-23 02:22:26,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42d32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:26, skipping insertion in model container [2021-11-23 02:22:26,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:25" (2/3) ... [2021-11-23 02:22:26,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42d32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:26, skipping insertion in model container [2021-11-23 02:22:26,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:26" (3/3) ... [2021-11-23 02:22:26,185 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-11-23 02:22:26,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:22:26,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:22:26,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:22:26,281 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:22:26,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:22:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:22:26,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:26,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:26,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952206, now seen corresponding path program 1 times [2021-11-23 02:22:26,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:26,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395420754] [2021-11-23 02:22:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:26,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:26,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:26,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:22:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:22:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:26,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:26,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:26,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395420754] [2021-11-23 02:22:26,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395420754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:26,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:26,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:22:26,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942658153] [2021-11-23 02:22:26,699 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:26,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:22:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:22:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:22:26,757 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:22:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:26,790 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-11-23 02:22:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:22:26,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-23 02:22:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:26,801 INFO L225 Difference]: With dead ends: 55 [2021-11-23 02:22:26,801 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:22:26,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:22:26,813 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:26,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:22:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 02:22:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-11-23 02:22:26,865 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2021-11-23 02:22:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:26,866 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-11-23 02:22:26,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:22:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-11-23 02:22:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:22:26,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:26,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:26,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:27,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:27,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1285201507, now seen corresponding path program 1 times [2021-11-23 02:22:27,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078382859] [2021-11-23 02:22:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:27,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:27,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:22:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:27,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:22:27,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:27,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:27,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:27,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078382859] [2021-11-23 02:22:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078382859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:27,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:27,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:22:27,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249338151] [2021-11-23 02:22:27,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:22:27,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:27,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:22:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:22:27,357 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:22:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:27,414 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2021-11-23 02:22:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:22:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 02:22:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:27,421 INFO L225 Difference]: With dead ends: 41 [2021-11-23 02:22:27,422 INFO L226 Difference]: Without dead ends: 32 [2021-11-23 02:22:27,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:22:27,428 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:27,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-23 02:22:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-11-23 02:22:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-11-23 02:22:27,457 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-11-23 02:22:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:27,458 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-11-23 02:22:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:22:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-11-23 02:22:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:22:27,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:27,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:27,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:27,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:27,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1915125478, now seen corresponding path program 1 times [2021-11-23 02:22:27,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:27,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012577920] [2021-11-23 02:22:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:27,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:27,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:27,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:22:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:27,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:22:27,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:28,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:22:29,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:29,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012577920] [2021-11-23 02:22:29,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012577920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:29,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:29,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 02:22:29,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876403441] [2021-11-23 02:22:29,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:22:29,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:22:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:22:29,326 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:29,400 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2021-11-23 02:22:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:22:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-23 02:22:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:29,405 INFO L225 Difference]: With dead ends: 56 [2021-11-23 02:22:29,406 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 02:22:29,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:22:29,408 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:29,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 134 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2021-11-23 02:22:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 02:22:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-23 02:22:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 02:22:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-23 02:22:29,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-11-23 02:22:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:29,425 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-23 02:22:29,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-23 02:22:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 02:22:29,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:29,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:29,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:29,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:29,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:29,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1943218574, now seen corresponding path program 1 times [2021-11-23 02:22:29,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:29,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72068009] [2021-11-23 02:22:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:29,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:29,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:29,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:22:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:29,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:22:29,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:22:29,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:22:29,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:29,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72068009] [2021-11-23 02:22:29,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72068009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:29,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:29,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:22:29,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919980746] [2021-11-23 02:22:29,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:29,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:22:29,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:22:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:22:29,942 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 02:22:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:29,992 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-23 02:22:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:22:29,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-23 02:22:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:29,997 INFO L225 Difference]: With dead ends: 43 [2021-11-23 02:22:29,997 INFO L226 Difference]: Without dead ends: 34 [2021-11-23 02:22:30,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:22:30,002 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:30,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-23 02:22:30,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-23 02:22:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-23 02:22:30,023 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 22 [2021-11-23 02:22:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:30,024 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-23 02:22:30,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 02:22:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-23 02:22:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:22:30,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:30,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:30,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:30,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:30,255 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1777787178, now seen corresponding path program 1 times [2021-11-23 02:22:30,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368031607] [2021-11-23 02:22:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:30,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:30,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:30,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:22:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:22:30,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:30,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:30,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:30,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368031607] [2021-11-23 02:22:30,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368031607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:30,620 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:30,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 02:22:30,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331633564] [2021-11-23 02:22:30,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:30,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:22:30,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:22:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:22:30,622 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:30,751 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-11-23 02:22:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:22:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-23 02:22:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:30,753 INFO L225 Difference]: With dead ends: 44 [2021-11-23 02:22:30,753 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 02:22:30,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:22:30,755 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 53 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:30,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 179 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:22:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 02:22:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-11-23 02:22:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-23 02:22:30,761 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 24 [2021-11-23 02:22:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:30,761 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-23 02:22:30,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-23 02:22:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:22:30,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:30,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:30,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-23 02:22:30,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:30,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1835045480, now seen corresponding path program 1 times [2021-11-23 02:22:30,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:30,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297041060] [2021-11-23 02:22:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:30,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:30,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:30,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:22:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:31,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:22:31,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:31,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:31,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:31,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297041060] [2021-11-23 02:22:31,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297041060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:31,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:31,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:22:31,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388615747] [2021-11-23 02:22:31,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:31,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:22:31,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:22:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:22:31,305 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:31,317 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-11-23 02:22:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:22:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-23 02:22:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:31,320 INFO L225 Difference]: With dead ends: 43 [2021-11-23 02:22:31,320 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 02:22:31,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:22:31,323 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:31,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:22:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 02:22:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-23 02:22:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-11-23 02:22:31,338 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 24 [2021-11-23 02:22:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:31,339 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-11-23 02:22:31,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-11-23 02:22:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 02:22:31,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:31,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:31,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:31,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:31,542 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1229034625, now seen corresponding path program 1 times [2021-11-23 02:22:31,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:31,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38582398] [2021-11-23 02:22:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:31,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:31,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:31,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:22:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:31,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:22:31,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:22:31,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:22:32,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:32,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38582398] [2021-11-23 02:22:32,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38582398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:32,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:32,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 02:22:32,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064677437] [2021-11-23 02:22:32,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:22:32,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:22:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:22:32,291 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:32,545 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-11-23 02:22:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:22:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-23 02:22:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:32,547 INFO L225 Difference]: With dead ends: 45 [2021-11-23 02:22:32,548 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:22:32,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:22:32,549 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:32,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-11-23 02:22:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:22:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 02:22:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:22:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-23 02:22:32,554 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2021-11-23 02:22:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:32,554 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-23 02:22:32,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-23 02:22:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:22:32,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:32,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:32,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:32,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:32,790 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2065734315, now seen corresponding path program 1 times [2021-11-23 02:22:32,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:22:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647499986] [2021-11-23 02:22:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:32,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:22:32,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:22:32,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:22:32,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:22:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:32,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 02:22:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:33,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:22:33,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:22:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647499986] [2021-11-23 02:22:33,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647499986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:33,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:22:33,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-23 02:22:33,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576288860] [2021-11-23 02:22:33,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:22:33,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:22:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:22:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:22:33,540 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:33,760 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-11-23 02:22:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:22:33,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-11-23 02:22:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:33,761 INFO L225 Difference]: With dead ends: 25 [2021-11-23 02:22:33,761 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:22:33,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:22:33,763 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:33,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 226 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2021-11-23 02:22:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:22:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:22:33,765 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) [2021-11-23 02:22:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:22:33,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-11-23 02:22:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:33,765 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:22:33,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:22:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:22:33,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:22:33,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:22:33,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-23 02:22:33,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:22:33,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:22:34,101 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 25 50) no Hoare annotation was computed. [2021-11-23 02:22:34,102 INFO L861 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 25 50) the Hoare annotation is: true [2021-11-23 02:22:34,102 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-11-23 02:22:34,102 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2021-11-23 02:22:34,102 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 25 50) no Hoare annotation was computed. [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-11-23 02:22:34,103 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|)) [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point L56-1(lines 56 57) no Hoare annotation was computed. [2021-11-23 02:22:34,103 INFO L858 garLoopResultBuilder]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2021-11-23 02:22:34,104 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 02:22:34,104 INFO L854 garLoopResultBuilder]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-11-23 02:22:34,104 INFO L858 garLoopResultBuilder]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2021-11-23 02:22:34,104 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:22:34,104 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 02:22:34,104 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 87) no Hoare annotation was computed. [2021-11-23 02:22:34,105 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-11-23 02:22:34,105 INFO L858 garLoopResultBuilder]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2021-11-23 02:22:34,105 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:22:34,105 INFO L861 garLoopResultBuilder]: At program point L91(lines 74 92) the Hoare annotation is: true [2021-11-23 02:22:34,105 INFO L858 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2021-11-23 02:22:34,105 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|)) [2021-11-23 02:22:34,106 INFO L858 garLoopResultBuilder]: For program point L54-1(lines 54 55) no Hoare annotation was computed. [2021-11-23 02:22:34,106 INFO L854 garLoopResultBuilder]: At program point L71(lines 62 72) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|)) [2021-11-23 02:22:34,107 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-11-23 02:22:34,107 INFO L858 garLoopResultBuilder]: For program point L59-2(line 59) no Hoare annotation was computed. [2021-11-23 02:22:34,107 INFO L854 garLoopResultBuilder]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|)) [2021-11-23 02:22:34,111 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:34,113 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:22:34,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:22:34 BoogieIcfgContainer [2021-11-23 02:22:34,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:22:34,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:22:34,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:22:34,133 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:22:34,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:26" (3/4) ... [2021-11-23 02:22:34,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:22:34,145 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2021-11-23 02:22:34,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-23 02:22:34,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-23 02:22:34,155 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 02:22:34,155 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:22:34,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2021-11-23 02:22:34,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result [2021-11-23 02:22:34,189 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x [2021-11-23 02:22:34,189 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result [2021-11-23 02:22:34,217 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:22:34,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:22:34,219 INFO L158 Benchmark]: Toolchain (without parser) took 9053.92ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 42.3MB in the beginning and 63.4MB in the end (delta: -21.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-23 02:22:34,220 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:34,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.82ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 30.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:22:34,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.94ms. Allocated memory is still 62.9MB. Free memory was 30.9MB in the beginning and 29.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:34,226 INFO L158 Benchmark]: Boogie Preprocessor took 90.90ms. Allocated memory is still 62.9MB. Free memory was 29.3MB in the beginning and 45.5MB in the end (delta: -16.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-23 02:22:34,227 INFO L158 Benchmark]: RCFGBuilder took 526.96ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 33.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:22:34,227 INFO L158 Benchmark]: TraceAbstraction took 7954.63ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 33.2MB in the beginning and 67.6MB in the end (delta: -34.4MB). Peak memory consumption was 469.2kB. Max. memory is 16.1GB. [2021-11-23 02:22:34,228 INFO L158 Benchmark]: Witness Printer took 85.91ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 63.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:22:34,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.82ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 30.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.94ms. Allocated memory is still 62.9MB. Free memory was 30.9MB in the beginning and 29.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 90.90ms. Allocated memory is still 62.9MB. Free memory was 29.3MB in the beginning and 45.5MB in the end (delta: -16.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 526.96ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 33.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7954.63ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 33.2MB in the beginning and 67.6MB in the end (delta: -34.4MB). Peak memory consumption was 469.2kB. Max. memory is 16.1GB. * Witness Printer took 85.91ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 63.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 87]: 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 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 969 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 739 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 230 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 269 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 62 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 318 ConstructedInterpolants, 45 QuantifiedInterpolants, 1310 SizeOfPredicates, 34 NumberOfNonLiveVariables, 540 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 60/60 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: 62]: Loop Invariant Derived loop invariant: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: \old(x) == x RESULT: Ultimate proved your program to be correct! [2021-11-23 02:22:34,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92e8996-a5cc-4495-b274-84dc3af43b40/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE