./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF --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 8c08a983a7c0b08f878bb6cfb5a8d37d856d7302f69f84382c3f724537bcbd1e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:39,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:39,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:39,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:39,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:39,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:39,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:39,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:39,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:39,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:39,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:39,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:39,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:39,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:39,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:39,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:39,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:39,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:39,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:39,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:39,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:39,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:39,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:39,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:39,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:39,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:39,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:39,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:39,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:39,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:39,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:39,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:39,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:39,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:39,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:39,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:39,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:39,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:39,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:39,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:39,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:39,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:09:39,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:39,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:39,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:39,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:39,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:39,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:39,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:39,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:09:39,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:39,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:39,457 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:09:39,457 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:09:39,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:39,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:09:39,458 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:09:39,459 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:09:39,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:39,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:09:39,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:09:39,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:09:39,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:39,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:39,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:39,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:39,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:39,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:09:39,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:39,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:39,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:39,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:39,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:39,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:39,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:39,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:39,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:39,465 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:09:39,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:09:39,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:39,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:39,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:39,466 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_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c08a983a7c0b08f878bb6cfb5a8d37d856d7302f69f84382c3f724537bcbd1e [2021-11-12 23:09:39,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:39,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:39,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:39,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:39,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:39,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2021-11-12 23:09:39,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/data/61b13b14e/c050d8f8a8ed4c7eb4dae6f343691aaa/FLAG8fae6f451 [2021-11-12 23:09:40,296 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:40,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2021-11-12 23:09:40,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/data/61b13b14e/c050d8f8a8ed4c7eb4dae6f343691aaa/FLAG8fae6f451 [2021-11-12 23:09:40,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/data/61b13b14e/c050d8f8a8ed4c7eb4dae6f343691aaa [2021-11-12 23:09:40,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:40,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:40,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:40,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:40,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:40,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f105848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40, skipping insertion in model container [2021-11-12 23:09:40,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:40,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:40,517 WARN L228 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_f47ecdf6-21d3-41b1-8183-09631be6faf2/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2021-11-12 23:09:40,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:40,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:09:40,574 WARN L228 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_f47ecdf6-21d3-41b1-8183-09631be6faf2/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2021-11-12 23:09:40,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:40,591 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:09:40,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40 WrapperNode [2021-11-12 23:09:40,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:40,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:40,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:09:40,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:09:40,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:40,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:09:40,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:09:40,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:09:40,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:09:40,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:09:40,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:09:40,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:09:40,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:40,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:09:40,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:09:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:09:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-11-12 23:09:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-11-12 23:09:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:09:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:09:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-12 23:09:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-12 23:09:41,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:09:41,039 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:09:41,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:41 BoogieIcfgContainer [2021-11-12 23:09:41,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:09:41,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:09:41,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:09:41,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:09:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:09:40" (1/3) ... [2021-11-12 23:09:41,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217c324a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:41, skipping insertion in model container [2021-11-12 23:09:41,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (2/3) ... [2021-11-12 23:09:41,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217c324a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:41, skipping insertion in model container [2021-11-12 23:09:41,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:41" (3/3) ... [2021-11-12 23:09:41,065 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2021-11-12 23:09:41,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:09:41,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:09:41,155 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:09:41,176 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 [2021-11-12 23:09:41,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:09:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:09:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:09:41,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:41,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:41,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:41,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1546332850, now seen corresponding path program 1 times [2021-11-12 23:09:41,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:09:41,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480139338] [2021-11-12 23:09:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:41,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:09:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:41,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:09:41,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480139338] [2021-11-12 23:09:41,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480139338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:41,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:41,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:09:41,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871795479] [2021-11-12 23:09:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:41,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:09:41,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:09:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:09:41,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:41,476 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:09:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:41,570 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-11-12 23:09:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:09:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-12 23:09:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:41,582 INFO L225 Difference]: With dead ends: 30 [2021-11-12 23:09:41,582 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 23:09:41,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:41,595 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:41,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 62 Invalid, 25 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 68.81ms Time] [2021-11-12 23:09:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 23:09:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 23:09:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:09:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-12 23:09:41,651 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2021-11-12 23:09:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:41,652 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-12 23:09:41,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:09:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-12 23:09:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:09:41,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:41,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:41,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:09:41,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1895588019, now seen corresponding path program 1 times [2021-11-12 23:09:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:09:41,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917876070] [2021-11-12 23:09:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:41,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:09:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:41,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:09:41,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917876070] [2021-11-12 23:09:41,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917876070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:41,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:41,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:09:41,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635171376] [2021-11-12 23:09:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:41,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:09:41,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:09:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:09:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:09:41,923 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:09:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:41,993 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-11-12 23:09:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:09:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-12 23:09:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:41,996 INFO L225 Difference]: With dead ends: 29 [2021-11-12 23:09:41,996 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:09:41,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:09:41,998 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:41,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 26 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 53.98ms Time] [2021-11-12 23:09:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:09:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-11-12 23:09:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-12 23:09:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-12 23:09:42,007 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2021-11-12 23:09:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:42,008 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-12 23:09:42,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:09:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-12 23:09:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:09:42,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:42,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:42,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:09:42,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -523916524, now seen corresponding path program 1 times [2021-11-12 23:09:42,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:09:42,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625385573] [2021-11-12 23:09:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:42,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:09:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:09:42,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:09:42,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625385573] [2021-11-12 23:09:42,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625385573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:42,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164977478] [2021-11-12 23:09:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:42,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:09:42,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:42,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:09:42,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:09:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:42,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:09:42,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:09:42,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:09:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164977478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:42,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:42,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 15 [2021-11-12 23:09:42,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406955721] [2021-11-12 23:09:42,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:42,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:09:42,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:09:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:09:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:09:42,939 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:09:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:42,992 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-11-12 23:09:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:09:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2021-11-12 23:09:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:42,994 INFO L225 Difference]: With dead ends: 23 [2021-11-12 23:09:42,994 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:09:42,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:09:42,999 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:43,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 25 Unknown, 0 Unchecked, 6.27ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 30.14ms Time] [2021-11-12 23:09:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:09:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:09:43,003 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) [2021-11-12 23:09:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:09:43,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-12 23:09:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:43,004 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:09:43,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:09:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:09:43,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:09:43,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:09:43,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:43,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:09:43,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:09:43,248 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-12 23:09:43,249 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-11-12 23:09:43,249 INFO L858 garLoopResultBuilder]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2021-11-12 23:09:43,249 INFO L861 garLoopResultBuilder]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2021-11-12 23:09:43,249 INFO L858 garLoopResultBuilder]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2021-11-12 23:09:43,250 INFO L861 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2021-11-12 23:09:43,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:09:43,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:09:43,250 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-11-12 23:09:43,250 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-11-12 23:09:43,251 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2021-11-12 23:09:43,251 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-12 23:09:43,251 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2021-11-12 23:09:43,251 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed. [2021-11-12 23:09:43,251 INFO L858 garLoopResultBuilder]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2021-11-12 23:09:43,252 INFO L861 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: true [2021-11-12 23:09:43,252 INFO L858 garLoopResultBuilder]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2021-11-12 23:09:43,252 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-11-12 23:09:43,252 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-11-12 23:09:43,252 INFO L861 garLoopResultBuilder]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2021-11-12 23:09:43,257 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:09:43,259 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:09:43,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:09:43 BoogieIcfgContainer [2021-11-12 23:09:43,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:09:43,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:09:43,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:09:43,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:09:43,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:41" (3/4) ... [2021-11-12 23:09:43,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:09:43,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2021-11-12 23:09:43,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-11-12 23:09:43,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-12 23:09:43,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 23:09:43,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 23:09:43,284 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:09:43,325 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:09:43,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:09:43,326 INFO L158 Benchmark]: Toolchain (without parser) took 3004.66ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 53.3MB in the beginning and 73.5MB in the end (delta: -20.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,327 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:43,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.43ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 53.2MB in the beginning and 91.3MB in the end (delta: -38.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.55ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 90.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,328 INFO L158 Benchmark]: Boogie Preprocessor took 51.74ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 89.2MB in the end (delta: 770.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:43,329 INFO L158 Benchmark]: RCFGBuilder took 344.04ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 78.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,329 INFO L158 Benchmark]: TraceAbstraction took 2219.67ms. Allocated memory is still 115.3MB. Free memory was 78.3MB in the beginning and 76.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,330 INFO L158 Benchmark]: Witness Printer took 60.39ms. Allocated memory is still 115.3MB. Free memory was 76.3MB in the beginning and 73.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:09:43,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.43ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 53.2MB in the beginning and 91.3MB in the end (delta: -38.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.55ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 90.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.74ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 89.2MB in the end (delta: 770.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.04ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 78.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2219.67ms. Allocated memory is still 115.3MB. Free memory was 78.3MB in the beginning and 76.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 60.39ms. Allocated memory is still 115.3MB. Free memory was 76.3MB in the beginning and 73.5MB in the end (delta: 2.7MB). 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: 27]: 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 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 152.92ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 111.12ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 48 mSDtfsCounter, 75 mSolverCounterSat, 14.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 1 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-12 23:09:43,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47ecdf6-21d3-41b1-8183-09631be6faf2/bin/utaipan-vmNK8stdcF/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