./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:48,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:48,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:48,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:48,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:48,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:48,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:48,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:48,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:48,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:48,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:48,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:48,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:48,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:48,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:48,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:48,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:48,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:48,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:48,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:48,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:48,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:48,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:48,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:48,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:48,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:48,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:48,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:48,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:48,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:48,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:48,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:48,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:48,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:48,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:48,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:48,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:48,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:48,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:48,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:48,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:48,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:12:48,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:48,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:48,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:48,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:48,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:48,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:48,364 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:48,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:48,364 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:48,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:48,366 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:48,366 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:48,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:48,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:48,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:48,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:48,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:48,367 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:48,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:48,369 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:48,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:48,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:48,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:48,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:48,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:48,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:48,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:48,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:48,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:48,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:48,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:48,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:48,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:48,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:48,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:48,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:48,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:48,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:48,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:48,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:48,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:48,376 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_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-11-20 23:12:48,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:48,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:48,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:48,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:48,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:48,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-11-20 23:12:48,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/5cfd9f53f/4d2d02a9653c4645a6b9ce83d34e457d/FLAG0757b702d [2021-11-20 23:12:49,174 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:49,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-11-20 23:12:49,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/5cfd9f53f/4d2d02a9653c4645a6b9ce83d34e457d/FLAG0757b702d [2021-11-20 23:12:49,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/5cfd9f53f/4d2d02a9653c4645a6b9ce83d34e457d [2021-11-20 23:12:49,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:49,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:49,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:49,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:49,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:49,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a29748f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49, skipping insertion in model container [2021-11-20 23:12:49,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:49,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:49,791 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-11-20 23:12:49,818 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-11-20 23:12:49,823 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-11-20 23:12:49,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:49,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:49,859 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-11-20 23:12:49,863 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-11-20 23:12:49,866 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-11-20 23:12:49,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:49,884 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:49,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49 WrapperNode [2021-11-20 23:12:49,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:49,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:49,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:49,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:49,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,925 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-11-20 23:12:49,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:49,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:49,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:49,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:49,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:49,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:49,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:49,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:49,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (1/1) ... [2021-11-20 23:12:49,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:49,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:50,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:12:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:50,097 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:50,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:50,204 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:50,215 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:50,215 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:12:50,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:50 BoogieIcfgContainer [2021-11-20 23:12:50,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:50,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:50,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:50,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:50,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:49" (1/3) ... [2021-11-20 23:12:50,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7eb56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:50, skipping insertion in model container [2021-11-20 23:12:50,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:49" (2/3) ... [2021-11-20 23:12:50,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7eb56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:50, skipping insertion in model container [2021-11-20 23:12:50,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:50" (3/3) ... [2021-11-20 23:12:50,243 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-11-20 23:12:50,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:50,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:12:50,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:50,320 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 [2021-11-20 23:12:50,320 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:12:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-20 23:12:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:12:50,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:50,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:12:50,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 62626, now seen corresponding path program 1 times [2021-11-20 23:12:50,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:50,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023801564] [2021-11-20 23:12:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:50,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:12:50,464 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:12:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:12:50,492 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:12:50,494 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:12:50,495 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 23:12:50,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-20 23:12:50,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-20 23:12:50,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:12:50,503 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-20 23:12:50,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:12:50,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:12:50 BoogieIcfgContainer [2021-11-20 23:12:50,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:12:50,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:12:50,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:12:50,526 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:12:50,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:50" (3/4) ... [2021-11-20 23:12:50,530 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:12:50,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:12:50,531 INFO L158 Benchmark]: Toolchain (without parser) took 978.51ms. Allocated memory is still 144.7MB. Free memory was 109.1MB in the beginning and 95.2MB in the end (delta: 14.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,532 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 54.4MB in the beginning and 54.4MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:50,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.27ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 119.1MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.74ms. Allocated memory is still 144.7MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,534 INFO L158 Benchmark]: Boogie Preprocessor took 20.95ms. Allocated memory is still 144.7MB. Free memory was 117.8MB in the beginning and 117.0MB in the end (delta: 821.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:50,535 INFO L158 Benchmark]: RCFGBuilder took 269.54ms. Allocated memory is still 144.7MB. Free memory was 116.6MB in the beginning and 108.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,536 INFO L158 Benchmark]: TraceAbstraction took 305.01ms. Allocated memory is still 144.7MB. Free memory was 107.4MB in the beginning and 95.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:12:50,536 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 144.7MB. Free memory was 95.6MB in the beginning and 95.2MB in the end (delta: 413.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:50,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 54.4MB in the beginning and 54.4MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.27ms. Allocated memory is still 144.7MB. Free memory was 108.8MB in the beginning and 119.1MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.74ms. Allocated memory is still 144.7MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.95ms. Allocated memory is still 144.7MB. Free memory was 117.8MB in the beginning and 117.0MB in the end (delta: 821.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.54ms. Allocated memory is still 144.7MB. Free memory was 116.6MB in the beginning and 108.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 305.01ms. Allocated memory is still 144.7MB. Free memory was 107.4MB in the beginning and 95.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 144.7MB. Free memory was 95.6MB in the beginning and 95.2MB in the end (delta: 413.7kB). 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: 25]: 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 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L49] CALL multiply() [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L25] COND TRUE !(res == 0x1.0p-126f) VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L25] reach_error() VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] - UnprovableResult [Line: 35]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-20 23:12:50,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:52,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:52,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:52,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:52,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:52,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:52,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:52,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:53,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:53,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:53,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:53,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:53,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:53,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:53,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:53,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:53,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:53,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:53,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:53,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:53,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:53,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:53,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:53,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:53,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:53,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:53,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:53,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:53,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:53,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:53,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:53,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:53,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:53,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:53,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:53,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:53,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:53,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:53,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:53,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:53,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:53,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:12:53,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:53,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:53,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:53,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:53,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:53,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:53,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:53,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:53,121 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:53,121 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:53,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:53,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:53,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:53,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:53,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:53,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:53,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:53,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:53,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:53,125 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:12:53,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:12:53,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:53,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:53,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:53,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:53,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:53,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:12:53,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:53,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:53,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:53,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:53,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:53,128 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:12:53,128 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:12:53,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:53,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:53,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:53,129 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_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-11-20 23:12:53,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:53,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:53,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:53,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:53,527 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:53,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-11-20 23:12:53,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/7a8310485/814b692550df43d293715c1962f31afa/FLAGd0a6c576a [2021-11-20 23:12:54,168 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:54,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-11-20 23:12:54,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/7a8310485/814b692550df43d293715c1962f31afa/FLAGd0a6c576a [2021-11-20 23:12:54,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/data/7a8310485/814b692550df43d293715c1962f31afa [2021-11-20 23:12:54,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:54,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:54,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:54,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:54,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:54,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321ef6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54, skipping insertion in model container [2021-11-20 23:12:54,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:54,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:54,731 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-11-20 23:12:54,743 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-11-20 23:12:54,751 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-11-20 23:12:54,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:54,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:54,802 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-11-20 23:12:54,806 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-11-20 23:12:54,809 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_03a4af67-3c21-4b9a-918f-f50faad31c95/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-11-20 23:12:54,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:54,828 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:54,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54 WrapperNode [2021-11-20 23:12:54,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:54,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:54,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:54,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:54,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,872 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-11-20 23:12:54,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:54,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:54,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:54,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:54,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:54,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:54,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:54,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:54,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:54,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:54,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:54,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:54,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:12:54,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:55,045 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:55,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:55,876 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:55,881 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:55,881 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:12:55,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:55 BoogieIcfgContainer [2021-11-20 23:12:55,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:55,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:55,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:55,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:55,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:54" (1/3) ... [2021-11-20 23:12:55,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb758ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:55, skipping insertion in model container [2021-11-20 23:12:55,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54" (2/3) ... [2021-11-20 23:12:55,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb758ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:55, skipping insertion in model container [2021-11-20 23:12:55,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:55" (3/3) ... [2021-11-20 23:12:55,890 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-11-20 23:12:55,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:55,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:12:55,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:55,981 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 [2021-11-20 23:12:55,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:12:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:12:56,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:56,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:12:56,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-20 23:12:56,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:12:56,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102921535] [2021-11-20 23:12:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:56,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:12:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:12:56,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:12:56,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:12:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:56,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:12:56,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:56,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:56,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:12:56,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102921535] [2021-11-20 23:12:56,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102921535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:56,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:56,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:12:56,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471246393] [2021-11-20 23:12:56,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:56,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:12:56,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:12:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:12:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:56,474 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:57,173 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-20 23:12:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:12:57,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 23:12:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:57,184 INFO L225 Difference]: With dead ends: 29 [2021-11-20 23:12:57,184 INFO L226 Difference]: Without dead ends: 11 [2021-11-20 23:12:57,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:57,190 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:57,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:12:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-20 23:12:57,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-20 23:12:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 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) [2021-11-20 23:12:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-20 23:12:57,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-11-20 23:12:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:57,218 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-20 23:12:57,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-20 23:12:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:12:57,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:57,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:12:57,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 23:12:57,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:12:57,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-11-20 23:12:57,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:12:57,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681882075] [2021-11-20 23:12:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:57,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:12:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:12:57,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:12:57,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:12:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:57,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:12:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:57,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:57,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:12:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681882075] [2021-11-20 23:12:57,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681882075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:57,904 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:57,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:12:57,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889378102] [2021-11-20 23:12:57,905 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:57,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:12:57,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:12:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:12:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:57,907 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) 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) [2021-11-20 23:12:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:58,232 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-20 23:12:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:12:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) 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 6 [2021-11-20 23:12:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:58,234 INFO L225 Difference]: With dead ends: 11 [2021-11-20 23:12:58,234 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 23:12:58,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:58,236 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:58,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:12:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 23:12:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 23:12:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2021-11-20 23:12:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-20 23:12:58,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-11-20 23:12:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:58,240 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-20 23:12:58,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) 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) [2021-11-20 23:12:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-20 23:12:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:12:58,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:58,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:58,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 23:12:58,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:12:58,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:58,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-11-20 23:12:58,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:12:58,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832932379] [2021-11-20 23:12:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:58,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:12:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:12:58,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:12:58,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:12:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:58,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:12:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:58,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:58,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:12:58,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832932379] [2021-11-20 23:12:58,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832932379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:58,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:58,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:12:58,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904534947] [2021-11-20 23:12:58,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:58,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:12:58,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:12:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:12:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:58,943 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:59,331 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-11-20 23:12:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:12:59,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:12:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:59,337 INFO L225 Difference]: With dead ends: 9 [2021-11-20 23:12:59,337 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:12:59,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:59,338 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:59,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:12:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:12:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:12:59,340 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) [2021-11-20 23:12:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:12:59,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-11-20 23:12:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:59,341 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:12:59,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:12:59,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:12:59,344 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 23:12:59,344 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-20 23:12:59,344 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-20 23:12:59,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 23:12:59,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:12:59,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:12:59,557 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 45) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-11-20 23:12:59,558 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:12:59,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:12:59,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:12:59,559 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-11-20 23:12:59,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-11-20 23:12:59,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-11-20 23:12:59,560 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 52) no Hoare annotation was computed. [2021-11-20 23:12:59,560 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-20 23:12:59,560 INFO L858 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-11-20 23:12:59,563 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 23:12:59,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:12:59,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:12:59 BoogieIcfgContainer [2021-11-20 23:12:59,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:12:59,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:12:59,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:12:59,571 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:12:59,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:55" (3/4) ... [2021-11-20 23:12:59,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:12:59,587 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-20 23:12:59,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 23:12:59,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:12:59,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:12:59,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:12:59,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:12:59,626 INFO L158 Benchmark]: Toolchain (without parser) took 5085.47ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.0MB in the beginning and 31.2MB in the end (delta: 3.8MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,631 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:59,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.18ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.2MB in the end (delta: -3.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.53ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,632 INFO L158 Benchmark]: Boogie Preprocessor took 26.93ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 35.5MB in the end (delta: 978.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:59,633 INFO L158 Benchmark]: RCFGBuilder took 982.06ms. Allocated memory is still 56.6MB. Free memory was 35.5MB in the beginning and 27.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,634 INFO L158 Benchmark]: TraceAbstraction took 3685.01ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.0MB in the beginning and 33.7MB in the end (delta: -6.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,634 INFO L158 Benchmark]: Witness Printer took 55.12ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 31.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:59,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.18ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.2MB in the end (delta: -3.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.53ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.93ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 35.5MB in the end (delta: 978.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 982.06ms. Allocated memory is still 56.6MB. Free memory was 35.5MB in the beginning and 27.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3685.01ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 27.0MB in the beginning and 33.7MB in the end (delta: -6.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 55.12ms. Allocated memory is still 69.2MB. Free memory was 33.7MB in the beginning and 31.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: 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, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 11 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 23:12:59,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03a4af67-3c21-4b9a-918f-f50faad31c95/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE