./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta --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 ec6cabd8118457b9c0b0fa0634e1000a9ed6e94f430780d1729f9bc16e854f85 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:37:56,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:56,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:56,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:56,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:56,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:56,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:56,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:56,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:56,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:56,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:56,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:56,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:56,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:56,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:56,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:56,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:56,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:56,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:56,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:56,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:56,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:56,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:56,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:56,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:56,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:56,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:56,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:56,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:56,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:56,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:56,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:56,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:56,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:56,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:56,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:56,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:56,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:56,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:56,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:56,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:56,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:37:56,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:56,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:56,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:56,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:56,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:56,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:56,645 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:56,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:56,645 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:56,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:56,646 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:56,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:56,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:56,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:56,647 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:56,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:56,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:56,648 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:56,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:56,648 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:37:56,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:37:56,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:56,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:56,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:56,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:56,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:56,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:56,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:56,651 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:56,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:56,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:56,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:56,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:56,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:56,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:56,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec6cabd8118457b9c0b0fa0634e1000a9ed6e94f430780d1729f9bc16e854f85 [2022-10-17 17:37:56,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:56,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:56,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:56,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:56,987 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:56,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2022-10-17 17:37:57,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/data/da1a5d8c7/674f20023f7f4b56a691665abb14bb2c/FLAGb9debc2da [2022-10-17 17:37:57,506 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:57,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2022-10-17 17:37:57,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/data/da1a5d8c7/674f20023f7f4b56a691665abb14bb2c/FLAGb9debc2da [2022-10-17 17:37:57,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/data/da1a5d8c7/674f20023f7f4b56a691665abb14bb2c [2022-10-17 17:37:57,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:57,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:57,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:57,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:57,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:57,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:57" (1/1) ... [2022-10-17 17:37:57,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3569fd47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:57, skipping insertion in model container [2022-10-17 17:37:57,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:57" (1/1) ... [2022-10-17 17:37:57,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:57,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:58,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c[530,543] [2022-10-17 17:37:58,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:58,130 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:58,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c[530,543] [2022-10-17 17:37:58,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:58,169 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:58,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58 WrapperNode [2022-10-17 17:37:58,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:58,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:58,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:58,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:58,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,204 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-17 17:37:58,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:58,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:58,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:58,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:58,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:58,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:58,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:58,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:58,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (1/1) ... [2022-10-17 17:37:58,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:58,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:58,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:58,326 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-17 17:37:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-17 17:37:58,390 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:58,392 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:58,523 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:58,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:58,548 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:37:58,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:58 BoogieIcfgContainer [2022-10-17 17:37:58,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:58,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:58,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:58,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:58,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:57" (1/3) ... [2022-10-17 17:37:58,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:58, skipping insertion in model container [2022-10-17 17:37:58,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:58" (2/3) ... [2022-10-17 17:37:58,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:58, skipping insertion in model container [2022-10-17 17:37:58,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:58" (3/3) ... [2022-10-17 17:37:58,560 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2022-10-17 17:37:58,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:58,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:58,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:58,641 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@927a21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:58,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:37:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:37:58,653 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:58,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:58,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1238481604, now seen corresponding path program 1 times [2022-10-17 17:37:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:58,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645152855] [2022-10-17 17:37:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:58,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:58,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:58,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645152855] [2022-10-17 17:37:58,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645152855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:58,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:58,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:37:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781016011] [2022-10-17 17:37:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:37:58,976 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-10-17 17:37:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:59,067 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-10-17 17:37:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:37:59,085 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 [2022-10-17 17:37:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:59,093 INFO L225 Difference]: With dead ends: 24 [2022-10-17 17:37:59,093 INFO L226 Difference]: Without dead ends: 14 [2022-10-17 17:37:59,096 INFO L412 NwaCegarLoop]: 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 [2022-10-17 17:37:59,100 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:37:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-17 17:37:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-17 17:37:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:37:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-17 17:37:59,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-10-17 17:37:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:59,145 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-17 17:37:59,145 INFO L496 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) [2022-10-17 17:37:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-17 17:37:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:37:59,147 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:59,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:37:59,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1515255835, now seen corresponding path program 1 times [2022-10-17 17:37:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:59,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096953094] [2022-10-17 17:37:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:37:59,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:59,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096953094] [2022-10-17 17:37:59,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096953094] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:37:59,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389515676] [2022-10-17 17:37:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:37:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:59,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:37:59,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:37:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:37:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:37:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:37:59,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:37:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:37:59,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389515676] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 17:37:59,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:37:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 12 [2022-10-17 17:37:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226197764] [2022-10-17 17:37:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:59,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:37:59,902 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-17 17:37:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:59,931 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-10-17 17:37:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:37:59,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 [2022-10-17 17:37:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:59,934 INFO L225 Difference]: With dead ends: 14 [2022-10-17 17:37:59,934 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:37:59,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:37:59,944 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:59,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:37:59,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:37:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:37:59,947 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) [2022-10-17 17:37:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:37:59,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-10-17 17:37:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:59,948 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:37:59,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-17 17:37:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:37:59,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:37:59,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:37:59,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:00,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:00,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:38:00,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:38:00,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:38:00,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-10-17 17:38:00,191 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-10-17 17:38:00,191 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-10-17 17:38:00,191 INFO L902 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2022-10-17 17:38:00,191 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-10-17 17:38:00,192 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2022-10-17 17:38:00,192 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2022-10-17 17:38:00,192 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2022-10-17 17:38:00,192 INFO L902 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2022-10-17 17:38:00,192 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2022-10-17 17:38:00,193 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-10-17 17:38:00,193 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-10-17 17:38:00,197 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:38:00,204 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:38:00,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:38:00 BoogieIcfgContainer [2022-10-17 17:38:00,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:38:00,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:38:00,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:38:00,226 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:38:00,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:58" (3/4) ... [2022-10-17 17:38:00,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:38:00,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-10-17 17:38:00,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-10-17 17:38:00,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 17:38:00,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:38:00,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:38:00,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:38:00,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:38:00,304 INFO L158 Benchmark]: Toolchain (without parser) took 2416.72ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 75.5MB in the end (delta: -14.7MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,304 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:00,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 73.0MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.23ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,305 INFO L158 Benchmark]: Boogie Preprocessor took 28.54ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 70.5MB in the end (delta: 871.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:00,306 INFO L158 Benchmark]: RCFGBuilder took 316.39ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 60.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,306 INFO L158 Benchmark]: TraceAbstraction took 1671.30ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 59.8MB in the beginning and 77.6MB in the end (delta: -17.8MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,307 INFO L158 Benchmark]: Witness Printer took 78.15ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 75.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:00,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 73.0MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.23ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.54ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 70.5MB in the end (delta: 871.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 316.39ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 60.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1671.30ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 59.8MB in the beginning and 77.6MB in the end (delta: -17.8MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Witness Printer took 78.15ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 75.5MB in the end (delta: 2.1MB). 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: 17]: 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 18 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 SizeOfPredicates, 1 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/12 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! [2022-10-17 17:38:00,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98206e79-5644-4555-a3d3-1f80f9559e91/bin/utaipan-G1rejxKTta/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