./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0281.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0281.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7 --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 232f7a655f6f2994683ec37dc98df7be72a1a46c6fd6dbf6a1ff9fd35a64400c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:55:20,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:55:20,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:55:20,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:55:20,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:55:20,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:55:20,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:55:20,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:55:20,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:55:20,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:55:20,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:55:20,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:55:20,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:55:20,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:55:20,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:55:20,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:55:20,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:55:20,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:55:20,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:55:20,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:55:20,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:55:20,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:55:20,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:55:20,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:55:20,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:55:20,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:55:20,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:55:20,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:55:20,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:55:20,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:55:20,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:55:20,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:55:20,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:55:20,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:55:20,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:55:20,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:55:20,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:55:20,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:55:20,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:55:20,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:55:20,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:55:20,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:55:20,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:55:20,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:55:20,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:55:20,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:55:20,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:55:20,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:55:20,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:55:20,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:55:20,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:55:20,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:55:20,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:55:20,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:55:20,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:55:20,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:55:20,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:55:20,761 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:55:20,761 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:55:20,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:55:20,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:55:20,762 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:55:20,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:55:20,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:55:20,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:55:20,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:55:20,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:55:20,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:55:20,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:55:20,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:55:20,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:55:20,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:55:20,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:55:20,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:55:20,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:20,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:55:20,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:55:20,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:55:20,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:55:20,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:55:20,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:55:20,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:55:20,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:55:20,768 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 232f7a655f6f2994683ec37dc98df7be72a1a46c6fd6dbf6a1ff9fd35a64400c [2021-11-25 17:55:21,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:55:21,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:55:21,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:55:21,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:55:21,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:55:21,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/float_req_bl_0281.c [2021-11-25 17:55:21,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/b62412290/df87d6cb65a84bbab925a719b28360df/FLAGb7781828a [2021-11-25 17:55:21,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:55:21,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c [2021-11-25 17:55:21,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/b62412290/df87d6cb65a84bbab925a719b28360df/FLAGb7781828a [2021-11-25 17:55:22,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/b62412290/df87d6cb65a84bbab925a719b28360df [2021-11-25 17:55:22,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:55:22,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:55:22,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:22,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:55:22,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:55:22,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f3fef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22, skipping insertion in model container [2021-11-25 17:55:22,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:55:22,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:55:22,375 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c[4632,4645] [2021-11-25 17:55:22,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:22,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:55:22,424 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c[4632,4645] [2021-11-25 17:55:22,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:22,439 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:55:22,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22 WrapperNode [2021-11-25 17:55:22,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:22,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:22,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:55:22,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:55:22,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,490 INFO L137 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 242 [2021-11-25 17:55:22,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:22,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:55:22,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:55:22,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:55:22,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:55:22,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:55:22,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:55:22,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:55:22,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (1/1) ... [2021-11-25 17:55:22,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:55:22,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:55:22,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:55:22,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 17:55:22,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:55:22,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:55:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:55:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:55:22,708 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:55:22,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:55:22,982 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:55:23,128 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:55:23,128 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-25 17:55:23,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:23 BoogieIcfgContainer [2021-11-25 17:55:23,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:55:23,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:55:23,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:55:23,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:55:23,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:55:22" (1/3) ... [2021-11-25 17:55:23,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c6cd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:23, skipping insertion in model container [2021-11-25 17:55:23,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:22" (2/3) ... [2021-11-25 17:55:23,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c6cd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:23, skipping insertion in model container [2021-11-25 17:55:23,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:23" (3/3) ... [2021-11-25 17:55:23,140 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0281.c [2021-11-25 17:55:23,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:55:23,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:55:23,203 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:55:23,210 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 [2021-11-25 17:55:23,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:55:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 43 states have internal predecessors, (71), 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) [2021-11-25 17:55:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:55:23,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:23,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:23,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -460165998, now seen corresponding path program 1 times [2021-11-25 17:55:23,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623609456] [2021-11-25 17:55:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:23,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:23,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:23,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623609456] [2021-11-25 17:55:23,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623609456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:23,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:23,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:55:23,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242160919] [2021-11-25 17:55:23,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:23,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:55:23,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:55:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:55:23,447 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:23,502 INFO L93 Difference]: Finished difference Result 86 states and 139 transitions. [2021-11-25 17:55:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:55:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 17:55:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:23,515 INFO L225 Difference]: With dead ends: 86 [2021-11-25 17:55:23,516 INFO L226 Difference]: Without dead ends: 41 [2021-11-25 17:55:23,519 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 [2021-11-25 17:55:23,524 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:23,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:55:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-25 17:55:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-25 17:55:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 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) [2021-11-25 17:55:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-25 17:55:23,559 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 8 [2021-11-25 17:55:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:23,559 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-25 17:55:23,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-11-25 17:55:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:55:23,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:23,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:23,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:55:23,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash 844884908, now seen corresponding path program 1 times [2021-11-25 17:55:23,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:23,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548689150] [2021-11-25 17:55:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:23,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:55:23,629 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:55:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:55:23,701 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:55:23,702 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:55:23,704 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 17:55:23,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:55:23,713 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 17:55:23,718 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:55:23,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:55:23 BoogieIcfgContainer [2021-11-25 17:55:23,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:55:23,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:55:23,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:55:23,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:55:23,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:23" (3/4) ... [2021-11-25 17:55:23,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 17:55:23,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:55:23,770 INFO L158 Benchmark]: Toolchain (without parser) took 1680.22ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 78.1MB in the beginning and 94.4MB in the end (delta: -16.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:55:23,771 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:55:23,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.20ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 83.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:55:23,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.23ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 81.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:55:23,779 INFO L158 Benchmark]: Boogie Preprocessor took 40.59ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 79.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:55:23,780 INFO L158 Benchmark]: RCFGBuilder took 597.71ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 59.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 17:55:23,783 INFO L158 Benchmark]: TraceAbstraction took 632.41ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 94.4MB in the end (delta: -35.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:55:23,783 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 140.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:55:23,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.20ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 83.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.23ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 81.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.59ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 79.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 597.71ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 59.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 632.41ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 94.4MB in the end (delta: -35.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 140.5MB. Free memory is still 94.4MB. 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: 194]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 104, overapproximation of bitwiseAnd at line 118, overapproximation of someUnaryFLOAToperation at line 102, overapproximation of someBinaryArithmeticFLOAToperation at line 121. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L100-L108] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L186] float x = __VERIFIER_nondet_float(); [L188] COND TRUE x < -1.0f || x > 1.0f [L190] CALL, EXPR __ieee754_asinf(x) [L111] float t, w, p, q, c, r, s; [L112] __int32_t hx, ix; VAL [\old(x)=1000000000000000000000000000001, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000001] [L114] ieee_float_shape_type gf_u; [L115] gf_u.value = (x) [L116] EXPR gf_u.word [L116] (hx) = gf_u.word [L118] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000001, huge_asin=1000000000000000000000000000000, hx=0, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000001] [L119] COND TRUE ix == 0x3f800000 [L121] return x * pio2_hi_asin + x * pio2_lo_asin; VAL [\old(x)=1000000000000000000000000000001, huge_asin=1000000000000000000000000000000, hx=0, ix=1065353216, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000001] [L190] RET, EXPR __ieee754_asinf(x) [L190] float res = __ieee754_asinf(x); [L193] CALL, EXPR isnan_float(res) [L15] return x != x; [L193] RET, EXPR isnan_float(res) [L193] COND TRUE !isnan_float(res) [L194] reach_error() VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000002, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000001] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 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, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 10 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=44occurred 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, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 17:55:23,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/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_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0281.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7 --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 232f7a655f6f2994683ec37dc98df7be72a1a46c6fd6dbf6a1ff9fd35a64400c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:55:26,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:55:26,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:55:26,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:55:26,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:55:26,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:55:26,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:55:26,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:55:26,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:55:26,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:55:26,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:55:26,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:55:26,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:55:26,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:55:26,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:55:26,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:55:26,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:55:26,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:55:26,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:55:26,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:55:26,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:55:26,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:55:26,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:55:26,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:55:26,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:55:26,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:55:26,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:55:26,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:55:26,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:55:26,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:55:26,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:55:26,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:55:26,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:55:26,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:55:26,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:55:26,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:55:26,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:55:26,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:55:26,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:55:26,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:55:26,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:55:26,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 17:55:26,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:55:26,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:55:26,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:55:26,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:55:26,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:55:26,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:55:26,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:55:26,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:55:26,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:55:26,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:55:26,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:55:26,326 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:55:26,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:55:26,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:55:26,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:55:26,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:55:26,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:55:26,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:55:26,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:55:26,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:55:26,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:55:26,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:55:26,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:55:26,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:55:26,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:55:26,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:55:26,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:55:26,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:55:26,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:55:26,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:26,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:55:26,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:55:26,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:55:26,333 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:55:26,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:55:26,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:55:26,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:55:26,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:55:26,334 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 232f7a655f6f2994683ec37dc98df7be72a1a46c6fd6dbf6a1ff9fd35a64400c [2021-11-25 17:55:26,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:55:26,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:55:26,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:55:26,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:55:26,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:55:26,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-newlib/float_req_bl_0281.c [2021-11-25 17:55:26,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/651f3000f/acd3a187361642c78274cb7f1178c4eb/FLAG9f00f9398 [2021-11-25 17:55:27,384 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:55:27,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c [2021-11-25 17:55:27,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/651f3000f/acd3a187361642c78274cb7f1178c4eb/FLAG9f00f9398 [2021-11-25 17:55:27,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/data/651f3000f/acd3a187361642c78274cb7f1178c4eb [2021-11-25 17:55:27,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:55:27,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:55:27,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:27,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:55:27,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:55:27,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:27" (1/1) ... [2021-11-25 17:55:27,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4eff77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:27, skipping insertion in model container [2021-11-25 17:55:27,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:27" (1/1) ... [2021-11-25 17:55:27,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:55:27,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:55:27,949 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c[4632,4645] [2021-11-25 17:55:27,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:27,987 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:55:28,049 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_b307f0c0-0ba0-4d56-a527-2bc92484a670/sv-benchmarks/c/float-newlib/float_req_bl_0281.c[4632,4645] [2021-11-25 17:55:28,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:28,083 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:55:28,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28 WrapperNode [2021-11-25 17:55:28,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:28,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:28,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:55:28,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:55:28,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,151 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 242 [2021-11-25 17:55:28,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:28,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:55:28,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:55:28,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:55:28,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:55:28,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:55:28,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:55:28,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:55:28,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (1/1) ... [2021-11-25 17:55:28,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:28,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:55:28,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:55:28,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:55:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:55:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:55:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:55:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-25 17:55:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 17:55:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:55:28,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:55:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-25 17:55:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 17:55:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:55:28,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:55:28,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:55:40,081 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:55:40,089 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:55:40,089 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-25 17:55:40,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:40 BoogieIcfgContainer [2021-11-25 17:55:40,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:55:40,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:55:40,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:55:40,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:55:40,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:55:27" (1/3) ... [2021-11-25 17:55:40,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29f763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:40, skipping insertion in model container [2021-11-25 17:55:40,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:28" (2/3) ... [2021-11-25 17:55:40,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29f763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:55:40, skipping insertion in model container [2021-11-25 17:55:40,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:40" (3/3) ... [2021-11-25 17:55:40,101 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0281.c [2021-11-25 17:55:40,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:55:40,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:55:40,151 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:55:40,157 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 [2021-11-25 17:55:40,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:55:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 57 states have internal predecessors, (93), 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) [2021-11-25 17:55:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 17:55:40,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:40,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:40,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 863812756, now seen corresponding path program 1 times [2021-11-25 17:55:40,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:55:40,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500385929] [2021-11-25 17:55:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:40,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:55:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:55:40,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:55:40,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:55:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:40,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 17:55:40,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:55:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:40,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:55:40,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:55:40,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500385929] [2021-11-25 17:55:40,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500385929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:40,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:40,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:55:40,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355355007] [2021-11-25 17:55:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:40,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 17:55:40,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:55:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 17:55:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:55:40,978 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 57 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:41,000 INFO L93 Difference]: Finished difference Result 113 states and 182 transitions. [2021-11-25 17:55:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 17:55:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 17:55:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:41,011 INFO L225 Difference]: With dead ends: 113 [2021-11-25 17:55:41,012 INFO L226 Difference]: Without dead ends: 54 [2021-11-25 17:55:41,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 17:55:41,018 INFO L933 BasicCegarLoop]: 76 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, 76 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 [2021-11-25 17:55:41,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:55:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-25 17:55:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-25 17:55:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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) [2021-11-25 17:55:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2021-11-25 17:55:41,064 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 10 [2021-11-25 17:55:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:41,065 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2021-11-25 17:55:41,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2021-11-25 17:55:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:55:41,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:41,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:41,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:55:41,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:55:41,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1283186732, now seen corresponding path program 1 times [2021-11-25 17:55:41,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:55:41,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530817260] [2021-11-25 17:55:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:41,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:55:41,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:55:41,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:55:41,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:55:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 17:55:41,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:55:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:42,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:55:42,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:55:42,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530817260] [2021-11-25 17:55:42,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530817260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:42,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:42,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:55:42,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453837797] [2021-11-25 17:55:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:55:42,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:55:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:55:42,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:55:42,534 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:42,560 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2021-11-25 17:55:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:55:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:55:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:42,561 INFO L225 Difference]: With dead ends: 59 [2021-11-25 17:55:42,561 INFO L226 Difference]: Without dead ends: 54 [2021-11-25 17:55:42,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:55:42,577 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:42,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-11-25 17:55:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-25 17:55:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-25 17:55:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 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) [2021-11-25 17:55:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2021-11-25 17:55:42,586 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 11 [2021-11-25 17:55:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:42,586 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2021-11-25 17:55:42,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2021-11-25 17:55:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 17:55:42,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:42,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:42,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:55:42,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:55:42,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1003963026, now seen corresponding path program 1 times [2021-11-25 17:55:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:55:42,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339301875] [2021-11-25 17:55:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:42,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:55:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:55:42,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:55:42,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 17:55:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 17:55:43,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:55:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:45,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:55:45,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:55:45,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339301875] [2021-11-25 17:55:45,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339301875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:45,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:45,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:55:45,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445123672] [2021-11-25 17:55:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:45,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:55:45,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:55:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:55:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:55:45,973 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:50,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 17:55:53,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 17:55:55,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 17:55:58,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 17:55:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:58,457 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2021-11-25 17:55:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:55:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 17:55:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:58,462 INFO L225 Difference]: With dead ends: 60 [2021-11-25 17:55:58,462 INFO L226 Difference]: Without dead ends: 55 [2021-11-25 17:55:58,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:55:58,464 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:58,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 285 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 4 Unknown, 7 Unchecked, 10.9s Time] [2021-11-25 17:55:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-25 17:55:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-25 17:55:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 states have internal predecessors, (69), 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) [2021-11-25 17:55:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-11-25 17:55:58,472 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 12 [2021-11-25 17:55:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:58,472 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-11-25 17:55:58,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-25 17:55:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 17:55:58,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:58,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:55:58,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-25 17:55:58,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:55:58,677 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:55:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1008306114, now seen corresponding path program 1 times [2021-11-25 17:55:58,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:55:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996542702] [2021-11-25 17:55:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:58,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:55:58,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:55:58,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:55:58,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 17:55:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:59,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 17:55:59,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:56:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:56:00,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:56:00,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:56:00,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996542702] [2021-11-25 17:56:00,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996542702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:00,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:56:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058621806] [2021-11-25 17:56:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:56:00,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:56:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:56:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:56:00,951 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:00,954 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2021-11-25 17:56:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:56:00,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 17:56:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:00,955 INFO L225 Difference]: With dead ends: 54 [2021-11-25 17:56:00,955 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 17:56:00,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:56:00,957 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:00,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-11-25 17:56:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 17:56:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 17:56:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 17:56:00,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-11-25 17:56:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:00,959 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 17:56:00,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 17:56:00,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 17:56:00,962 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 17:56:01,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 17:56:01,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:56:01,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 17:56:01,957 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-25 17:56:01,957 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 17:56:01,957 INFO L858 garLoopResultBuilder]: For program point L119(lines 119 139) no Hoare annotation was computed. [2021-11-25 17:56:01,957 INFO L858 garLoopResultBuilder]: For program point L70(lines 70 73) no Hoare annotation was computed. [2021-11-25 17:56:01,957 INFO L858 garLoopResultBuilder]: For program point L87-1(lines 87 91) no Hoare annotation was computed. [2021-11-25 17:56:01,958 INFO L854 garLoopResultBuilder]: At program point L87-2(lines 87 91) the Hoare annotation is: false [2021-11-25 17:56:01,958 INFO L854 garLoopResultBuilder]: At program point L55-2(lines 55 64) the Hoare annotation is: false [2021-11-25 17:56:01,967 INFO L858 garLoopResultBuilder]: For program point L55-3(lines 19 84) no Hoare annotation was computed. [2021-11-25 17:56:01,967 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 197) no Hoare annotation was computed. [2021-11-25 17:56:01,967 INFO L858 garLoopResultBuilder]: For program point L122(lines 122 139) no Hoare annotation was computed. [2021-11-25 17:56:01,968 INFO L858 garLoopResultBuilder]: For program point L188-2(lines 188 197) no Hoare annotation was computed. [2021-11-25 17:56:01,968 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2021-11-25 17:56:01,968 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 44) no Hoare annotation was computed. [2021-11-25 17:56:01,968 INFO L858 garLoopResultBuilder]: For program point L156-1(lines 156 160) no Hoare annotation was computed. [2021-11-25 17:56:01,968 INFO L854 garLoopResultBuilder]: At program point L156-2(lines 156 160) the Hoare annotation is: false [2021-11-25 17:56:01,969 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 61) no Hoare annotation was computed. [2021-11-25 17:56:01,969 INFO L858 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-11-25 17:56:01,969 INFO L858 garLoopResultBuilder]: For program point L57-2(lines 57 61) no Hoare annotation was computed. [2021-11-25 17:56:01,969 INFO L854 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2021-11-25 17:56:01,969 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2021-11-25 17:56:01,969 INFO L858 garLoopResultBuilder]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L854 garLoopResultBuilder]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L41-4(lines 41 42) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 124 139) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L125(lines 125 138) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 96) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L92-1(lines 85 98) no Hoare annotation was computed. [2021-11-25 17:56:01,970 INFO L858 garLoopResultBuilder]: For program point L92-2(lines 92 96) no Hoare annotation was computed. [2021-11-25 17:56:01,971 INFO L854 garLoopResultBuilder]: At program point L175(lines 110 176) the Hoare annotation is: (and (exists ((|ULTIMATE.start___ieee754_asinf_~x#1| (_ FloatingPoint 8 24))) (= (let ((.cse0 (fp.sub roundNearestTiesToEven |ULTIMATE.start___ieee754_asinf_~x#1| |ULTIMATE.start___ieee754_asinf_~x#1|))) (fp.div roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_asinf_#res#1|)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 17:56:01,971 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 127) no Hoare annotation was computed. [2021-11-25 17:56:01,971 INFO L858 garLoopResultBuilder]: For program point L193(lines 193 196) no Hoare annotation was computed. [2021-11-25 17:56:01,971 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 17:56:01,972 INFO L858 garLoopResultBuilder]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2021-11-25 17:56:01,972 INFO L854 garLoopResultBuilder]: At program point L78-2(lines 78 82) the Hoare annotation is: false [2021-11-25 17:56:01,972 INFO L858 garLoopResultBuilder]: For program point L78-3(lines 78 82) no Hoare annotation was computed. [2021-11-25 17:56:01,972 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-11-25 17:56:01,972 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 165) no Hoare annotation was computed. [2021-11-25 17:56:01,973 INFO L858 garLoopResultBuilder]: For program point L161-1(lines 153 171) no Hoare annotation was computed. [2021-11-25 17:56:01,973 INFO L858 garLoopResultBuilder]: For program point L161-2(lines 161 165) no Hoare annotation was computed. [2021-11-25 17:56:01,973 INFO L858 garLoopResultBuilder]: For program point L113-1(lines 113 117) no Hoare annotation was computed. [2021-11-25 17:56:01,973 INFO L854 garLoopResultBuilder]: At program point L113-2(lines 113 117) the Hoare annotation is: (and (or (exists ((currentRoundingMode RoundingMode)) (fp.gt |ULTIMATE.start___ieee754_asinf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0))) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start___ieee754_asinf_~x#1| (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0))))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-25 17:56:01,973 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-25 17:56:01,973 INFO L858 garLoopResultBuilder]: For program point L113-3(lines 113 117) no Hoare annotation was computed. [2021-11-25 17:56:01,974 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-25 17:56:01,974 INFO L854 garLoopResultBuilder]: At program point L97(lines 85 98) the Hoare annotation is: false [2021-11-25 17:56:01,974 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-11-25 17:56:01,974 INFO L854 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2021-11-25 17:56:01,974 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 17:56:01,974 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 194) no Hoare annotation was computed. [2021-11-25 17:56:01,974 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 75) no Hoare annotation was computed. [2021-11-25 17:56:01,975 INFO L854 garLoopResultBuilder]: At program point L83(lines 19 84) the Hoare annotation is: false [2021-11-25 17:56:01,975 INFO L861 garLoopResultBuilder]: At program point L199(lines 178 200) the Hoare annotation is: true [2021-11-25 17:56:01,975 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2021-11-25 17:56:01,975 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 171) no Hoare annotation was computed. [2021-11-25 17:56:01,975 INFO L858 garLoopResultBuilder]: For program point L150-2(lines 110 176) no Hoare annotation was computed. [2021-11-25 17:56:01,975 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 74) no Hoare annotation was computed. [2021-11-25 17:56:01,978 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 17:56:01,979 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:56:01,989 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,990 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,990 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,990 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,990 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,991 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,991 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,991 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,994 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,994 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,994 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,994 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,994 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,995 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,995 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:01,995 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,996 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:01,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:01,997 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:01,997 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:01,998 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:01,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:56:01 BoogieIcfgContainer [2021-11-25 17:56:01,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:56:01,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:56:01,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:56:02,000 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:56:02,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:55:40" (3/4) ... [2021-11-25 17:56:02,002 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 17:56:02,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-25 17:56:02,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 17:56:02,016 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 17:56:02,016 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 17:56:02,039 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.gt~FLOAT(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0))) || (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0))))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-25 17:56:02,040 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ULTIMATE.start___ieee754_asinf_~x#1 : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_asinf_~x#1, ULTIMATE.start___ieee754_asinf_~x#1), ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_asinf_~x#1, ULTIMATE.start___ieee754_asinf_~x#1)) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-25 17:56:02,041 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-25 17:56:02,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:56:02,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:56:02,065 INFO L158 Benchmark]: Toolchain (without parser) took 34344.02ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 44.3MB in the beginning and 54.2MB in the end (delta: -9.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,066 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 46.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:56:02,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.14ms. Allocated memory is still 65.0MB. Free memory was 44.1MB in the beginning and 44.5MB in the end (delta: -448.0kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.38ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,067 INFO L158 Benchmark]: Boogie Preprocessor took 55.71ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,067 INFO L158 Benchmark]: RCFGBuilder took 11882.81ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 39.7MB in the beginning and 57.3MB in the end (delta: -17.6MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,068 INFO L158 Benchmark]: TraceAbstraction took 21905.06ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 59.5MB in the end (delta: -2.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,068 INFO L158 Benchmark]: Witness Printer took 65.42ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 54.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 17:56:02,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 46.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.14ms. Allocated memory is still 65.0MB. Free memory was 44.1MB in the beginning and 44.5MB in the end (delta: -448.0kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.38ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.71ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11882.81ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 39.7MB in the beginning and 57.3MB in the end (delta: -17.6MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 21905.06ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 59.5MB in the end (delta: -2.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Witness Printer took 65.42ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 54.2MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 194]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 622 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 32 IncrementalHoareTripleChecker+Unchecked, 413 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 209 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 47 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 10 QuantifiedInterpolants, 295 SizeOfPredicates, 20 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 178]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 110]: Loop Invariant [2021-11-25 17:56:02,083 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,083 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,083 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,083 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,083 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,084 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,084 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,084 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,084 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_asinf_~x#1,QUANTIFIED] [2021-11-25 17:56:02,086 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists ULTIMATE.start___ieee754_asinf_~x#1 : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_asinf_~x#1, ULTIMATE.start___ieee754_asinf_~x#1), ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_asinf_~x#1, ULTIMATE.start___ieee754_asinf_~x#1)) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 156]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 113]: Loop Invariant [2021-11-25 17:56:02,087 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:02,087 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:02,087 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-25 17:56:02,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:02,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-25 17:56:02,088 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.gt~FLOAT(x, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0))) || (\exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0))))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-25 17:56:02,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b307f0c0-0ba0-4d56-a527-2bc92484a670/bin/utaipan-eEHZpOm5b7/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