./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan --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 8694f441d1171d1c23eab45976b4da66501cd11f ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:36:57,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:36:57,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:36:57,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:36:57,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:36:57,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:36:57,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:36:57,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:36:57,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:36:57,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:36:57,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:36:57,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:36:57,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:36:57,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:36:57,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:36:57,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:36:57,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:36:57,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:36:57,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:36:57,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:36:57,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:36:57,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:36:57,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:36:57,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:36:57,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:36:57,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:36:57,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:36:57,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:36:57,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:36:57,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:36:57,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:36:57,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:36:57,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:36:57,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:36:57,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:36:57,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:36:57,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:36:57,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:36:57,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:36:57,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:36:57,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:36:57,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:36:57,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:36:57,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:36:57,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:36:57,485 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:36:57,486 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:36:57,486 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:36:57,486 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:36:57,486 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:36:57,487 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:36:57,487 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:36:57,488 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:36:57,488 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:36:57,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:36:57,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:36:57,496 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:36:57,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:36:57,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:36:57,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:36:57,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:36:57,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:36:57,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:36:57,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:36:57,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:36:57,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:36:57,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:36:57,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:36:57,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:36:57,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:36:57,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:36:57,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:36:57,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:57,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:36:57,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:36:57,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:36:57,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:36:57,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:36:57,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:36:57,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:36:57,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:36:57,502 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-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8694f441d1171d1c23eab45976b4da66501cd11f [2020-12-03 12:36:57,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:36:57,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:36:57,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:36:57,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:36:57,788 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:36:57,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2020-12-03 12:36:57,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/data/4878ce394/de9d0e7003a6416ea9f536d4d2a89593/FLAGaa030d6d4 [2020-12-03 12:36:58,471 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:36:58,472 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2020-12-03 12:36:58,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/data/4878ce394/de9d0e7003a6416ea9f536d4d2a89593/FLAGaa030d6d4 [2020-12-03 12:36:58,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/data/4878ce394/de9d0e7003a6416ea9f536d4d2a89593 [2020-12-03 12:36:58,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:36:58,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:36:58,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:58,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:36:58,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:36:58,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:58" (1/1) ... [2020-12-03 12:36:58,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b1f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:58, skipping insertion in model container [2020-12-03 12:36:58,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:58" (1/1) ... [2020-12-03 12:36:58,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:36:58,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:59,101 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i[299,312] [2020-12-03 12:36:59,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:59,131 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:36:59,144 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i[299,312] [2020-12-03 12:36:59,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:59,165 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:36:59,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59 WrapperNode [2020-12-03 12:36:59,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:59,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:59,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:36:59,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:36:59,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:59,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:36:59,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:36:59,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:36:59,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... [2020-12-03 12:36:59,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:36:59,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:36:59,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:36:59,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:36:59,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:36:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:36:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:36:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:36:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:36:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:36:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:36:59,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:36:59,635 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-03 12:36:59,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:59 BoogieIcfgContainer [2020-12-03 12:36:59,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:36:59,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:36:59,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:36:59,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:36:59,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:36:58" (1/3) ... [2020-12-03 12:36:59,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdf627c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:59, skipping insertion in model container [2020-12-03 12:36:59,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:59" (2/3) ... [2020-12-03 12:36:59,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdf627c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:59, skipping insertion in model container [2020-12-03 12:36:59,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:59" (3/3) ... [2020-12-03 12:36:59,648 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2020-12-03 12:36:59,665 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:36:59,670 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-03 12:36:59,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-03 12:36:59,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:36:59,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:36:59,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:36:59,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:36:59,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:36:59,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:36:59,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:36:59,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:36:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-03 12:36:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:36:59,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:59,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:36:59,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash 60705, now seen corresponding path program 1 times [2020-12-03 12:36:59,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:59,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565269909] [2020-12-03 12:36:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:00,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565269909] [2020-12-03 12:37:00,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:00,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:37:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111682716] [2020-12-03 12:37:00,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:37:00,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:37:00,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:37:00,058 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-12-03 12:37:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:00,087 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-03 12:37:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:37:00,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-03 12:37:00,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:00,105 INFO L225 Difference]: With dead ends: 16 [2020-12-03 12:37:00,105 INFO L226 Difference]: Without dead ends: 6 [2020-12-03 12:37:00,118 INFO L677 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 [2020-12-03 12:37:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-12-03 12:37:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-12-03 12:37:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-12-03 12:37:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-12-03 12:37:00,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2020-12-03 12:37:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:00,168 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-12-03 12:37:00,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:37:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-12-03 12:37:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:37:00,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:00,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:37:00,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:37:00,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 58541815, now seen corresponding path program 1 times [2020-12-03 12:37:00,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:00,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793053367] [2020-12-03 12:37:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:00,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793053367] [2020-12-03 12:37:00,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:00,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:37:00,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460692960] [2020-12-03 12:37:00,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:37:00,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:00,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:37:00,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:37:00,326 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 4 states. [2020-12-03 12:37:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:00,360 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-12-03 12:37:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:37:00,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-03 12:37:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:00,361 INFO L225 Difference]: With dead ends: 6 [2020-12-03 12:37:00,361 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:37:00,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:37:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:37:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:37:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:37:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:37:00,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-12-03 12:37:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:00,364 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:37:00,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:37:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:37:00,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:37:00,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:37:00,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:37:00,372 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:37:00,373 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-03 12:37:00,373 INFO L262 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-12-03 12:37:00,373 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-12-03 12:37:00,374 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-03 12:37:00,374 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-03 12:37:00,374 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-12-03 12:37:00,374 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-03 12:37:00,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:37:00,375 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-12-03 12:37:00,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:37:00 BoogieIcfgContainer [2020-12-03 12:37:00,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:37:00,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:37:00,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:37:00,383 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:37:00,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:59" (3/4) ... [2020-12-03 12:37:00,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:37:00,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-03 12:37:00,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-03 12:37:00,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:37:00,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:37:00,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d85954f-b001-4beb-ab36-44c1d6874678/bin/utaipan/witness.graphml [2020-12-03 12:37:00,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:37:00,443 INFO L168 Benchmark]: Toolchain (without parser) took 1572.46 ms. Allocated memory is still 88.1 MB. Free memory was 61.3 MB in the beginning and 36.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,444 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 44.8 MB in the beginning and 44.8 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:00,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.24 ms. Allocated memory is still 88.1 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 88.1 MB. Free memory was 59.0 MB in the beginning and 57.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:00,446 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 56.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,447 INFO L168 Benchmark]: RCFGBuilder took 398.08 ms. Allocated memory is still 88.1 MB. Free memory was 56.6 MB in the beginning and 64.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,448 INFO L168 Benchmark]: TraceAbstraction took 742.75 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 38.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,448 INFO L168 Benchmark]: Witness Printer took 58.36 ms. Allocated memory is still 88.1 MB. Free memory was 38.6 MB in the beginning and 36.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:00,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 44.8 MB in the beginning and 44.8 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.24 ms. Allocated memory is still 88.1 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 88.1 MB. Free memory was 59.0 MB in the beginning and 57.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.06 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 56.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 398.08 ms. Allocated memory is still 88.1 MB. Free memory was 56.6 MB in the beginning and 64.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 742.75 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 38.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.36 ms. Allocated memory is still 88.1 MB. Free memory was 38.6 MB in the beginning and 36.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 2 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be correct! Received shutdown request...