./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh --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 45de9b50be73ad8596a15a884179fe100fef73e55c1a72900286dd4b459dfc0f --- 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-2329fc7 [2022-12-14 12:32:29,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:32:29,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:32:30,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:32:30,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:32:30,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:32:30,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:32:30,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:32:30,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:32:30,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:32:30,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:32:30,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:32:30,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:32:30,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:32:30,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:32:30,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:32:30,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:32:30,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:32:30,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:32:30,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:32:30,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:32:30,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:32:30,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:32:30,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:32:30,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:32:30,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:32:30,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:32:30,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:32:30,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:32:30,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:32:30,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:32:30,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:32:30,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:32:30,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:32:30,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:32:30,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:32:30,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:32:30,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:32:30,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:32:30,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:32:30,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:32:30,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:32:30,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:32:30,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:32:30,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:32:30,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:32:30,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:32:30,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:32:30,075 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:32:30,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:32:30,075 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:32:30,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:32:30,076 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:32:30,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:32:30,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:32:30,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:32:30,076 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:32:30,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:32:30,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:32:30,077 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:32:30,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:32:30,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:32:30,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:32:30,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:32:30,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:32:30,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:32:30,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:32:30,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:32:30,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:32:30,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:30,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:32:30,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:32:30,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:32:30,082 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_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45de9b50be73ad8596a15a884179fe100fef73e55c1a72900286dd4b459dfc0f [2022-12-14 12:32:30,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:32:30,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:32:30,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:32:30,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:32:30,292 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:32:30,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem14_label11.c [2022-12-14 12:32:32,854 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:32:33,091 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:32:33,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/sv-benchmarks/c/eca-rers2012/Problem14_label11.c [2022-12-14 12:32:33,102 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/data/ad2eb5410/7586158dfef3411487172cafb2317525/FLAGa74c350c6 [2022-12-14 12:32:33,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/data/ad2eb5410/7586158dfef3411487172cafb2317525 [2022-12-14 12:32:33,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:32:33,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:32:33,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:33,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:32:33,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:32:33,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:33,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc28d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33, skipping insertion in model container [2022-12-14 12:32:33,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:33,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:32:33,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:32:33,617 WARN L237 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_affff5c9-6c6b-4648-a3bc-355faeade3ba/sv-benchmarks/c/eca-rers2012/Problem14_label11.c[2373,2386] [2022-12-14 12:32:33,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:33,772 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:32:33,785 WARN L237 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_affff5c9-6c6b-4648-a3bc-355faeade3ba/sv-benchmarks/c/eca-rers2012/Problem14_label11.c[2373,2386] [2022-12-14 12:32:33,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:33,914 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:32:33,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33 WrapperNode [2022-12-14 12:32:33,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:33,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:33,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:32:33,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:32:33,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:33,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,002 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2022-12-14 12:32:34,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:34,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:32:34,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:32:34,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:32:34,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:32:34,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:32:34,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:32:34,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:32:34,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (1/1) ... [2022-12-14 12:32:34,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:34,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:34,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:32:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:32:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:32:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:32:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:32:34,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:32:34,201 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:32:34,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:32:35,159 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:32:37,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:32:37,761 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:32:37,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:32:37 BoogieIcfgContainer [2022-12-14 12:32:37,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:32:37,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:32:37,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:32:37,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:32:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:32:33" (1/3) ... [2022-12-14 12:32:37,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aceb39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:32:37, skipping insertion in model container [2022-12-14 12:32:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:33" (2/3) ... [2022-12-14 12:32:37,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aceb39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:32:37, skipping insertion in model container [2022-12-14 12:32:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:32:37" (3/3) ... [2022-12-14 12:32:37,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label11.c [2022-12-14 12:32:37,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:32:37,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:32:37,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:32:37,823 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;@376b7efc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:32:37,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:32:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:32:37,830 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:37,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:32:37,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:32:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1065477643, now seen corresponding path program 1 times [2022-12-14 12:32:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:37,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022973464] [2022-12-14 12:32:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:37,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:38,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022973464] [2022-12-14 12:32:38,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022973464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:38,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:38,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:32:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281435426] [2022-12-14 12:32:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:38,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:38,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:38,046 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:38,111 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-12-14 12:32:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:38,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:32:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:38,118 INFO L225 Difference]: With dead ends: 23 [2022-12-14 12:32:38,118 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 12:32:38,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:38,122 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:38,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:32:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 12:32:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-12-14 12:32:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-12-14 12:32:38,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-12-14 12:32:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:38,145 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-12-14 12:32:38,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-12-14 12:32:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:32:38,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:38,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:32:38,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:32:38,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:32:38,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1815714183, now seen corresponding path program 1 times [2022-12-14 12:32:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:38,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382762189] [2022-12-14 12:32:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:38,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:52,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382762189] [2022-12-14 12:32:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382762189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456621555] [2022-12-14 12:32:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:52,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:52,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:52,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:52,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_affff5c9-6c6b-4648-a3bc-355faeade3ba/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:32:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:52,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:32:52,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:33:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:33:23,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:40:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:40:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456621555] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:40:56,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888504300] [2022-12-14 12:40:56,158 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 12:40:56,158 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:40:56,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:40:56,164 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:40:56,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:40:56,872 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 12:40:56,875 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 12:42:45,402 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 159