./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label58.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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/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 4686812837d0b7fcfdbf0acaaf6bfbeac96390344167f4bca70cb7d640c8f80b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:51:04,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:51:04,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:51:04,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:51:04,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:51:04,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:51:04,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:51:04,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:51:04,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:51:04,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:51:04,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:51:04,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:51:04,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:51:04,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:51:04,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:51:04,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:51:04,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:51:04,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:51:04,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:51:04,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:51:04,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:51:04,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:51:04,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:51:04,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:51:04,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:51:04,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:51:04,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:51:04,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:51:04,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:51:04,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:51:04,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:51:04,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:51:04,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:51:04,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:51:04,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:51:04,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:51:04,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:51:04,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:51:04,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:51:04,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:51:04,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:51:04,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:51:05,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:51:05,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:51:05,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:51:05,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:51:05,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:51:05,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:51:05,015 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:51:05,015 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:51:05,015 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:51:05,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:51:05,016 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:51:05,016 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:51:05,016 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:51:05,017 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:51:05,017 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:51:05,017 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:51:05,018 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:51:05,018 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:51:05,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:51:05,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:51:05,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:51:05,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:51:05,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:51:05,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:51:05,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:51:05,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:51:05,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:51:05,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:51:05,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:51:05,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:51:05,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:51:05,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:51:05,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:51:05,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:51:05,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:51:05,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:51:05,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:51:05,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:51:05,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:51:05,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:51:05,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:51:05,027 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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4686812837d0b7fcfdbf0acaaf6bfbeac96390344167f4bca70cb7d640c8f80b [2021-11-20 23:51:05,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:51:05,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:51:05,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:51:05,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:51:05,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:51:05,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/eca-rers2012/Problem11_label58.c [2021-11-20 23:51:05,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/data/dd9f80a32/180abf8f9a6e451abb4bf260d72dff76/FLAGfe762dd59 [2021-11-20 23:51:06,042 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:51:06,043 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/sv-benchmarks/c/eca-rers2012/Problem11_label58.c [2021-11-20 23:51:06,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/data/dd9f80a32/180abf8f9a6e451abb4bf260d72dff76/FLAGfe762dd59 [2021-11-20 23:51:06,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/data/dd9f80a32/180abf8f9a6e451abb4bf260d72dff76 [2021-11-20 23:51:06,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:51:06,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:51:06,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:51:06,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:51:06,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:51:06,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:06" (1/1) ... [2021-11-20 23:51:06,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4396bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:06, skipping insertion in model container [2021-11-20 23:51:06,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:06" (1/1) ... [2021-11-20 23:51:06,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:51:06,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:51:06,539 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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/sv-benchmarks/c/eca-rers2012/Problem11_label58.c[2676,2689] [2021-11-20 23:51:06,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:51:06,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:51:06,859 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_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/sv-benchmarks/c/eca-rers2012/Problem11_label58.c[2676,2689] [2021-11-20 23:51:07,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:51:07,047 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:51:07,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07 WrapperNode [2021-11-20 23:51:07,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:51:07,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:51:07,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:51:07,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:51:07,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,236 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2021-11-20 23:51:07,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:51:07,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:51:07,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:51:07,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:51:07,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:51:07,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:51:07,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:51:07,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:51:07,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (1/1) ... [2021-11-20 23:51:07,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:51:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:51:07,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:51:07,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:51:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:51:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:51:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:51:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:51:07,526 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:51:07,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:51:09,263 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:51:13,893 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:51:13,893 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:51:13,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:13 BoogieIcfgContainer [2021-11-20 23:51:13,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:51:13,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:51:13,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:51:13,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:51:13,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:51:06" (1/3) ... [2021-11-20 23:51:13,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abb13f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:13, skipping insertion in model container [2021-11-20 23:51:13,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:07" (2/3) ... [2021-11-20 23:51:13,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abb13f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:13, skipping insertion in model container [2021-11-20 23:51:13,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:13" (3/3) ... [2021-11-20 23:51:13,906 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2021-11-20 23:51:13,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:51:13,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:51:13,972 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:51:13,979 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 23:51:13,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:51:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 23:51:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:51:13,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:13,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:51:13,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:14,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1191214115, now seen corresponding path program 1 times [2021-11-20 23:51:14,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:14,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129825418] [2021-11-20 23:51:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:14,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:14,172 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 23:51:14,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129825418] [2021-11-20 23:51:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129825418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:14,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:14,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:51:14,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411506207] [2021-11-20 23:51:14,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:14,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:51:14,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:51:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:14,209 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 23:51:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:14,313 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-20 23:51:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:51:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-20 23:51:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:14,323 INFO L225 Difference]: With dead ends: 23 [2021-11-20 23:51:14,323 INFO L226 Difference]: Without dead ends: 11 [2021-11-20 23:51:14,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:14,329 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:14,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:51:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-20 23:51:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-11-20 23:51:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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 23:51:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-20 23:51:14,359 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-11-20 23:51:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:14,359 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-20 23:51:14,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 23:51:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-20 23:51:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:51:14,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:14,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-20 23:51:14,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:51:14,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:14,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash -70317565, now seen corresponding path program 1 times [2021-11-20 23:51:14,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:14,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064407031] [2021-11-20 23:51:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:14,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:51:15,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:15,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064407031] [2021-11-20 23:51:15,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064407031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:51:15,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388643555] [2021-11-20 23:51:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:15,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:51:15,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:51:15,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:51:15,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad2ab353-23f8-4b1e-8f9b-dd10ab3f29ce/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:51:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:15,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:51:15,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:51:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:51:18,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:55,760 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 23:56:55,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [158307606] [2021-11-20 23:56:55,778 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-20 23:56:55,779 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:56:55,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:56:55,788 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:56:55,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:56:59,701 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 13 [2021-11-20 23:56:59,864 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7986 conjuctions. This might take some time... [2021-11-20 23:57:00,755 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 696 conjuctions. [2021-11-20 23:57:00,800 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 13 [2021-11-20 23:57:00,944 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7986 conjuctions. This might take some time... [2021-11-20 23:57:01,667 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 696 conjuctions. [2021-11-20 23:57:10,813 WARN L227 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-20 23:57:19,671 WARN L227 SmtUtils]: Spent 8.84s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)