./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- 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-38b53e6 [2022-11-25 23:17:33,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:17:33,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:17:33,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:17:33,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:17:33,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:17:33,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:17:33,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:17:33,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:17:33,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:17:33,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:17:33,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:17:33,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:17:33,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:17:33,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:17:33,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:17:33,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:17:33,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:17:33,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:17:33,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:17:33,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:17:33,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:17:33,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:17:33,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:17:33,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:17:33,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:17:33,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:17:33,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:17:33,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:17:33,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:17:33,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:17:33,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:17:33,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:17:33,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:17:33,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:17:33,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:17:33,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:17:33,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:17:33,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:17:33,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:17:33,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:17:33,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:17:34,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:17:34,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:17:34,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:17:34,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:17:34,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:17:34,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:17:34,028 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:17:34,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:17:34,029 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:17:34,029 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:17:34,030 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:17:34,030 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:17:34,030 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:17:34,030 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:17:34,031 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:17:34,031 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:17:34,031 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:17:34,031 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:17:34,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:17:34,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:17:34,033 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:17:34,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:17:34,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:17:34,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:17:34,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:17:34,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:17:34,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:17:34,035 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:17:34,035 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:17:34,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:17:34,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:17:34,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:17:34,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:17:34,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:17:34,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:34,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:17:34,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:17:34,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:17:34,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:17:34,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:17:34,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:17:34,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:17:34,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:17:34,039 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_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-11-25 23:17:34,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:17:34,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:17:34,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:17:34,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:17:34,336 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:17:34,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 23:17:37,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:17:37,869 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:17:37,874 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 23:17:37,901 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/data/8e77f592b/ef1b988c92e045a8bfc62495ee035f78/FLAG625156170 [2022-11-25 23:17:37,924 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/data/8e77f592b/ef1b988c92e045a8bfc62495ee035f78 [2022-11-25 23:17:37,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:17:37,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:17:37,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:37,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:17:37,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:17:37,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:37" (1/1) ... [2022-11-25 23:17:37,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c092d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:37, skipping insertion in model container [2022-11-25 23:17:37,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:37" (1/1) ... [2022-11-25 23:17:37,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:17:38,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:17:38,877 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_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 23:17:38,889 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 23:17:38,894 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 23:17:38,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:38,916 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:17:38,997 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_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 23:17:39,028 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 23:17:39,032 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 23:17:39,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:39,161 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:17:39,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39 WrapperNode [2022-11-25 23:17:39,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:39,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:39,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:17:39,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:17:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,278 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 476 [2022-11-25 23:17:39,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:39,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:17:39,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:17:39,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:17:39,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:17:39,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:17:39,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:17:39,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:17:39,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (1/1) ... [2022-11-25 23:17:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:39,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:17:39,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a66afd3-e457-4b1d-a1e2-5f13f4f50ca2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:17:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-11-25 23:17:39,426 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-11-25 23:17:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:17:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:17:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:17:39,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:17:39,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:17:39,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:17:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-11-25 23:17:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-11-25 23:17:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:17:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:17:39,430 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:17:39,606 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:17:39,609 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:17:40,516 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:17:40,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:17:40,527 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-25 23:17:40,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:40 BoogieIcfgContainer [2022-11-25 23:17:40,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:17:40,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:17:40,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:17:40,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:17:40,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:17:37" (1/3) ... [2022-11-25 23:17:40,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663caf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:40, skipping insertion in model container [2022-11-25 23:17:40,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:39" (2/3) ... [2022-11-25 23:17:40,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663caf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:40, skipping insertion in model container [2022-11-25 23:17:40,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:40" (3/3) ... [2022-11-25 23:17:40,538 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-11-25 23:17:40,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:17:40,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:17:40,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 23:17:40,559 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:17:40,746 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 23:17:40,810 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:17:40,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 470 places, 514 transitions, 1050 flow [2022-11-25 23:17:40,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 470 places, 514 transitions, 1050 flow [2022-11-25 23:17:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 514 transitions, 1050 flow [2022-11-25 23:17:41,313 INFO L130 PetriNetUnfolder]: 109/1127 cut-off events. [2022-11-25 23:17:41,313 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 23:17:41,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 1127 events. 109/1127 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6908 event pairs, 0 based on Foata normal form. 0/964 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-11-25 23:17:41,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 124104 [2022-11-25 23:18:35,361 WARN L233 SmtUtils]: Spent 32.29s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:18:55,759 WARN L233 SmtUtils]: Spent 20.40s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:19:26,028 WARN L233 SmtUtils]: Spent 30.27s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:19:43,241 WARN L233 SmtUtils]: Spent 17.21s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:20:03,909 WARN L233 SmtUtils]: Spent 19.19s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:20:21,048 WARN L233 SmtUtils]: Spent 17.14s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:20:36,905 WARN L233 SmtUtils]: Spent 15.85s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:20:52,959 WARN L233 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:22:24,189 WARN L233 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 306 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:22:54,624 WARN L233 SmtUtils]: Spent 30.43s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:24:51,823 WARN L233 SmtUtils]: Spent 1.95m on a formula simplification. DAG size of input: 316 DAG size of output: 276 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:25:35,070 WARN L233 SmtUtils]: Spent 43.24s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:25:35,188 INFO L134 LiptonReduction]: Checked pairs total: 334625 [2022-11-25 23:25:35,188 INFO L136 LiptonReduction]: Total number of compositions: 524 [2022-11-25 23:25:35,197 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 130 places, 155 transitions, 332 flow [2022-11-25 23:25:37,613 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49746 states, 49544 states have (on average 3.575387534312934) internal successors, (177139), 49745 states have internal predecessors, (177139), 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) [2022-11-25 23:25:37,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:25:37,683 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;@700c1f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:25:37,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-25 23:25:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 49746 states, 49544 states have (on average 3.575387534312934) internal successors, (177139), 49745 states have internal predecessors, (177139), 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) [2022-11-25 23:25:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:25:37,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:37,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:25:37,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-25 23:25:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash -239712999, now seen corresponding path program 1 times [2022-11-25 23:25:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090190211] [2022-11-25 23:25:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:25:38,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:38,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090190211] [2022-11-25 23:25:38,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090190211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:25:38,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:25:38,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:25:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424169298] [2022-11-25 23:25:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:25:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:25:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:25:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:25:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:38,718 INFO L87 Difference]: Start difference. First operand has 49746 states, 49544 states have (on average 3.575387534312934) internal successors, (177139), 49745 states have internal predecessors, (177139), 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, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-25 23:25:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:39,847 INFO L93 Difference]: Finished difference Result 9132 states and 29075 transitions. [2022-11-25 23:25:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:25:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-25 23:25:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:40,022 INFO L225 Difference]: With dead ends: 9132 [2022-11-25 23:25:40,022 INFO L226 Difference]: Without dead ends: 9127 [2022-11-25 23:25:40,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:40,031 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:40,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 31 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:25:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9127 states. [2022-11-25 23:25:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9127 to 9127. [2022-11-25 23:25:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9127 states, 9095 states have (on average 3.196261682242991) internal successors, (29070), 9126 states have internal predecessors, (29070), 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) [2022-11-25 23:25:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9127 states to 9127 states and 29070 transitions. [2022-11-25 23:25:40,929 INFO L78 Accepts]: Start accepts. Automaton has 9127 states and 29070 transitions. Word has length 6 [2022-11-25 23:25:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:40,931 INFO L495 AbstractCegarLoop]: Abstraction has 9127 states and 29070 transitions. [2022-11-25 23:25:40,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-25 23:25:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9127 states and 29070 transitions. [2022-11-25 23:25:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:25:40,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:40,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:25:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:25:40,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-25 23:25:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1243156993, now seen corresponding path program 1 times [2022-11-25 23:25:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:40,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543898232] [2022-11-25 23:25:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:25:41,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:41,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543898232] [2022-11-25 23:25:41,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543898232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:25:41,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:25:41,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:25:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310396820] [2022-11-25 23:25:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:25:41,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:25:41,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:25:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:25:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:25:41,218 INFO L87 Difference]: Start difference. First operand 9127 states and 29070 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 23:25:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:43,216 INFO L93 Difference]: Finished difference Result 16823 states and 54064 transitions. [2022-11-25 23:25:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:25:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-25 23:25:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:43,337 INFO L225 Difference]: With dead ends: 16823 [2022-11-25 23:25:43,337 INFO L226 Difference]: Without dead ends: 16823 [2022-11-25 23:25:43,338 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 [2022-11-25 23:25:43,339 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 90 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:43,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 39 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 23:25:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16823 states. [2022-11-25 23:25:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16823 to 16823. [2022-11-25 23:25:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16823 states, 16791 states have (on average 3.2198201417426002) internal successors, (54064), 16822 states have internal predecessors, (54064), 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) [2022-11-25 23:25:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16823 states to 16823 states and 54064 transitions. [2022-11-25 23:25:44,485 INFO L78 Accepts]: Start accepts. Automaton has 16823 states and 54064 transitions. Word has length 9 [2022-11-25 23:25:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:44,486 INFO L495 AbstractCegarLoop]: Abstraction has 16823 states and 54064 transitions. [2022-11-25 23:25:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 23:25:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 16823 states and 54064 transitions. [2022-11-25 23:25:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:25:44,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:44,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-25 23:25:44,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:25:44,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-25 23:25:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash -97350772, now seen corresponding path program 1 times [2022-11-25 23:25:44,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:44,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927947069] [2022-11-25 23:25:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:44,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:44,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:25:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:44,656 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:25:44,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:25:44,660 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-25 23:25:44,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2022-11-25 23:25:44,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2022-11-25 23:25:44,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2022-11-25 23:25:44,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2022-11-25 23:25:44,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2022-11-25 23:25:44,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2022-11-25 23:25:44,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2022-11-25 23:25:44,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2022-11-25 23:25:44,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2022-11-25 23:25:44,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2022-11-25 23:25:44,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2022-11-25 23:25:44,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2022-11-25 23:25:44,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2022-11-25 23:25:44,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2022-11-25 23:25:44,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2022-11-25 23:25:44,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2022-11-25 23:25:44,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 24 remaining) [2022-11-25 23:25:44,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2022-11-25 23:25:44,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2022-11-25 23:25:44,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2022-11-25 23:25:44,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2022-11-25 23:25:44,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2022-11-25 23:25:44,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2022-11-25 23:25:44,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:25:44,689 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 23:25:44,692 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:25:44,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 23:25:44,893 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-25 23:25:44,906 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:25:44,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 707 places, 776 transitions, 1600 flow [2022-11-25 23:25:44,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 707 places, 776 transitions, 1600 flow [2022-11-25 23:25:44,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 707 places, 776 transitions, 1600 flow [2022-11-25 23:25:46,961 INFO L130 PetriNetUnfolder]: 384/3722 cut-off events. [2022-11-25 23:25:46,962 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-25 23:25:47,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 3722 events. 384/3722 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 30225 event pairs, 2 based on Foata normal form. 0/3163 useless extension candidates. Maximal degree in co-relation 2073. Up to 64 conditions per place. [2022-11-25 23:25:47,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 384376 [2022-11-25 23:28:13,966 WARN L233 SmtUtils]: Spent 33.22s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:28:45,307 WARN L233 SmtUtils]: Spent 31.34s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:29:25,199 WARN L233 SmtUtils]: Spent 39.89s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:29:59,014 WARN L233 SmtUtils]: Spent 33.81s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 23:31:36,425 WARN L233 SmtUtils]: Spent 1.60m on a formula simplification that was a NOOP. DAG size: 273 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)