./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_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R --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 Automizer --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 15:34:36,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:34:36,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:34:36,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:34:36,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:34:36,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:34:36,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:34:36,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:34:36,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:34:36,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:34:36,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:34:36,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:34:36,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:34:36,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:34:36,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:34:36,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:34:36,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:34:36,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:34:36,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:34:36,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:34:36,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:34:36,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:34:36,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:34:36,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:34:36,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:34:36,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:34:36,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:34:36,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:34:36,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:34:36,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:34:36,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:34:36,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:34:36,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:34:36,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:34:36,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:34:36,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:34:36,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:34:36,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:34:36,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:34:36,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:34:36,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:34:36,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 15:34:36,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:34:36,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:34:36,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:34:36,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:34:36,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:34:36,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:34:36,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:34:36,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:34:36,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:34:36,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:34:36,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:34:36,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:34:36,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:34:36,418 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:34:36,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:34:36,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:34:36,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:34:36,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:34:36,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:34:36,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:34:36,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:34:36,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:36,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:34:36,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:34:36,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:34:36,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:34:36,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:34:36,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:34:36,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:34:36,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:34:36,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:34:36,421 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-11-25 15:34:36,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:34:36,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:34:36,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:34:36,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:34:36,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:34:36,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 15:34:39,823 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:34:40,230 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:34:40,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2022-11-25 15:34:40,264 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/data/0688cc1ac/d7cb8087be534a28a1b57ea8a839ac76/FLAGa5f2fe17e [2022-11-25 15:34:40,278 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/data/0688cc1ac/d7cb8087be534a28a1b57ea8a839ac76 [2022-11-25 15:34:40,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:34:40,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:34:40,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:40,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:34:40,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:34:40,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:40" (1/1) ... [2022-11-25 15:34:40,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3207248a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:40, skipping insertion in model container [2022-11-25 15:34:40,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:40" (1/1) ... [2022-11-25 15:34:40,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:34:40,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:34:41,171 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_827e9359-6ad1-498c-8ce4-ea88fd30b992/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 15:34:41,183 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 15:34:41,188 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 15:34:41,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:41,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:34:41,273 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_827e9359-6ad1-498c-8ce4-ea88fd30b992/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2022-11-25 15:34:41,280 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 15:34:41,289 WARN L623 FunctionHandler]: Unknown extern function fflush [2022-11-25 15:34:41,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:41,428 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:34:41,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41 WrapperNode [2022-11-25 15:34:41,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:41,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:41,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:34:41,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:34:41,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,534 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 476 [2022-11-25 15:34:41,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:41,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:34:41,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:34:41,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:34:41,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:34:41,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:34:41,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:34:41,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:34:41,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (1/1) ... [2022-11-25 15:34:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:41,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:41,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:34:41,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827e9359-6ad1-498c-8ce4-ea88fd30b992/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:34:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-11-25 15:34:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-11-25 15:34:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:34:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:34:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:34:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:34:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-25 15:34:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:34:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:34:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:34:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:34:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:34:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:34:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-11-25 15:34:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-11-25 15:34:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:34:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:34:41,689 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:34:41,889 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:34:41,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:34:42,834 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:34:42,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:34:42,846 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-25 15:34:42,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:34:42 BoogieIcfgContainer [2022-11-25 15:34:42,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:34:42,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:34:42,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:34:42,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:34:42,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:34:40" (1/3) ... [2022-11-25 15:34:42,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1803f75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:34:42, skipping insertion in model container [2022-11-25 15:34:42,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:41" (2/3) ... [2022-11-25 15:34:42,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1803f75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:34:42, skipping insertion in model container [2022-11-25 15:34:42,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:34:42" (3/3) ... [2022-11-25 15:34:42,859 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-11-25 15:34:42,868 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:34:42,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:34:42,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 15:34:42,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:34:43,026 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 15:34:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:43,598 INFO L130 PetriNetUnfolder]: 109/1127 cut-off events. [2022-11-25 15:34:43,599 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:34:43,626 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 15:34:43,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:43,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:43,655 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:34:43,686 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:43,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:43,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 514 transitions, 1050 flow [2022-11-25 15:34:44,001 INFO L130 PetriNetUnfolder]: 109/1127 cut-off events. [2022-11-25 15:34:44,001 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:34:44,021 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 15:34:44,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 124104 [2022-11-25 15:35:35,797 WARN L233 SmtUtils]: Spent 30.36s 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 15:35:52,838 WARN L233 SmtUtils]: Spent 17.04s 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 15:36:25,184 WARN L233 SmtUtils]: Spent 32.34s 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 15:36:44,324 WARN L233 SmtUtils]: Spent 19.14s 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 15:37:07,790 WARN L233 SmtUtils]: Spent 21.90s 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 15:37:26,762 WARN L233 SmtUtils]: Spent 18.97s 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 15:37:43,868 WARN L233 SmtUtils]: Spent 17.10s 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 15:38:01,017 WARN L233 SmtUtils]: Spent 17.15s 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 15:39:37,517 WARN L233 SmtUtils]: Spent 1.61m 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 15:40:14,275 WARN L233 SmtUtils]: Spent 36.75s 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 15:42:32,430 WARN L233 SmtUtils]: Spent 2.30m 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 15:43:18,098 WARN L233 SmtUtils]: Spent 45.66s 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 15:43:18,233 INFO L134 LiptonReduction]: Checked pairs total: 334625 [2022-11-25 15:43:18,234 INFO L136 LiptonReduction]: Total number of compositions: 524 [2022-11-25 15:43:18,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:43:18,255 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=PETRI_NET, 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;@2a8fae08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:43:18,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-25 15:43:18,261 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-11-25 15:43:18,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:43:18,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:43:18,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:43:18,263 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 15:43:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -239712999, now seen corresponding path program 1 times [2022-11-25 15:43:18,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806758805] [2022-11-25 15:43:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:18,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:18,773 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 15:43:18,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:18,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806758805] [2022-11-25 15:43:18,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806758805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:18,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:18,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:43:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289974918] [2022-11-25 15:43:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:18,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:18,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:18,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 481 out of 1038 [2022-11-25 15:43:18,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 155 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 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 15:43:18,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:43:18,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 481 of 1038 [2022-11-25 15:43:18,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:43:22,375 INFO L130 PetriNetUnfolder]: 13235/20425 cut-off events. [2022-11-25 15:43:22,376 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-11-25 15:43:22,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40548 conditions, 20425 events. 13235/20425 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 135353 event pairs, 3990 based on Foata normal form. 411/16010 useless extension candidates. Maximal degree in co-relation 39636. Up to 11261 conditions per place. [2022-11-25 15:43:22,533 INFO L137 encePairwiseOnDemand]: 1016/1038 looper letters, 188 selfloop transitions, 8 changer transitions 12/224 dead transitions. [2022-11-25 15:43:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 224 transitions, 890 flow [2022-11-25 15:43:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:43:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1670 transitions. [2022-11-25 15:43:22,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5362877328195247 [2022-11-25 15:43:22,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1670 transitions. [2022-11-25 15:43:22,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1670 transitions. [2022-11-25 15:43:22,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:43:22,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1670 transitions. [2022-11-25 15:43:22,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 556.6666666666666) internal successors, (1670), 3 states have internal predecessors, (1670), 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 15:43:22,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1038.0) internal successors, (4152), 4 states have internal predecessors, (4152), 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 15:43:22,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1038.0) internal successors, (4152), 4 states have internal predecessors, (4152), 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 15:43:22,649 INFO L175 Difference]: Start difference. First operand has 130 places, 155 transitions, 332 flow. Second operand 3 states and 1670 transitions. [2022-11-25 15:43:22,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 224 transitions, 890 flow [2022-11-25 15:43:22,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 224 transitions, 890 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:43:22,676 INFO L231 Difference]: Finished difference. Result has 127 places, 134 transitions, 320 flow [2022-11-25 15:43:22,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1038, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=127, PETRI_TRANSITIONS=134} [2022-11-25 15:43:22,683 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, -3 predicate places. [2022-11-25 15:43:22,684 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 134 transitions, 320 flow [2022-11-25 15:43:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 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 15:43:22,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:43:22,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:22,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:43:22,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-25 15:43:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1243157037, now seen corresponding path program 1 times [2022-11-25 15:43:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:22,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951046198] [2022-11-25 15:43:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:43:22,976 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 15:43:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:43:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951046198] [2022-11-25 15:43:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951046198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:43:22,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:43:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:43:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5254048] [2022-11-25 15:43:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:43:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:43:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:43:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:43:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:43:23,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 1038 [2022-11-25 15:43:23,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 134 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 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 15:43:23,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:43:23,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 1038 [2022-11-25 15:43:23,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:43:29,135 INFO L130 PetriNetUnfolder]: 24404/37525 cut-off events. [2022-11-25 15:43:29,136 INFO L131 PetriNetUnfolder]: For 6290/6290 co-relation queries the response was YES. [2022-11-25 15:43:29,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77589 conditions, 37525 events. 24404/37525 cut-off events. For 6290/6290 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 260298 event pairs, 10171 based on Foata normal form. 0/30723 useless extension candidates. Maximal degree in co-relation 76639. Up to 19195 conditions per place. [2022-11-25 15:43:29,374 INFO L137 encePairwiseOnDemand]: 1033/1038 looper letters, 197 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-11-25 15:43:29,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 215 transitions, 904 flow [2022-11-25 15:43:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:43:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:43:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1675 transitions. [2022-11-25 15:43:29,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.537893384714194 [2022-11-25 15:43:29,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1675 transitions. [2022-11-25 15:43:29,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1675 transitions. [2022-11-25 15:43:29,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:43:29,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1675 transitions. [2022-11-25 15:43:29,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 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 15:43:29,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1038.0) internal successors, (4152), 4 states have internal predecessors, (4152), 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 15:43:29,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1038.0) internal successors, (4152), 4 states have internal predecessors, (4152), 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 15:43:29,400 INFO L175 Difference]: Start difference. First operand has 127 places, 134 transitions, 320 flow. Second operand 3 states and 1675 transitions. [2022-11-25 15:43:29,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 215 transitions, 904 flow [2022-11-25 15:43:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:43:29,415 INFO L231 Difference]: Finished difference. Result has 122 places, 135 transitions, 328 flow [2022-11-25 15:43:29,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1038, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=122, PETRI_TRANSITIONS=135} [2022-11-25 15:43:29,417 INFO L288 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2022-11-25 15:43:29,417 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 135 transitions, 328 flow [2022-11-25 15:43:29,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 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 15:43:29,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:43:29,419 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-25 15:43:29,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:43:29,420 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 15:43:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash -97350772, now seen corresponding path program 1 times [2022-11-25 15:43:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:43:29,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315261161] [2022-11-25 15:43:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:43:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:43:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:43:29,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:43:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:43:29,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:43:29,633 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:43:29,634 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-25 15:43:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2022-11-25 15:43:29,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2022-11-25 15:43:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2022-11-25 15:43:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2022-11-25 15:43:29,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2022-11-25 15:43:29,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2022-11-25 15:43:29,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2022-11-25 15:43:29,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2022-11-25 15:43:29,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2022-11-25 15:43:29,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2022-11-25 15:43:29,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2022-11-25 15:43:29,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2022-11-25 15:43:29,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2022-11-25 15:43:29,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2022-11-25 15:43:29,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2022-11-25 15:43:29,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2022-11-25 15:43:29,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 24 remaining) [2022-11-25 15:43:29,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2022-11-25 15:43:29,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2022-11-25 15:43:29,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2022-11-25 15:43:29,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2022-11-25 15:43:29,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2022-11-25 15:43:29,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2022-11-25 15:43:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:43:29,648 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 15:43:29,652 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 15:43:29,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 15:43:29,760 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-25 15:43:29,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:31,330 INFO L130 PetriNetUnfolder]: 384/3722 cut-off events. [2022-11-25 15:43:31,330 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-25 15:43:31,489 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 15:43:31,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:31,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:31,560 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:43:31,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:31,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:31,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 707 places, 776 transitions, 1600 flow [2022-11-25 15:43:33,321 INFO L130 PetriNetUnfolder]: 384/3722 cut-off events. [2022-11-25 15:43:33,322 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-25 15:43:33,470 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 15:43:34,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 384376 [2022-11-25 15:46:15,457 WARN L233 SmtUtils]: Spent 50.47s 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 15:46:56,270 WARN L233 SmtUtils]: Spent 40.81s 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 15:47:33,988 WARN L233 SmtUtils]: Spent 37.72s 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 15:48:12,100 WARN L233 SmtUtils]: Spent 38.11s 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 15:49:31,116 WARN L233 SmtUtils]: Spent 1.29m 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)