./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:02:10,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:02:10,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:02:10,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:02:10,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:02:11,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:02:11,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:02:11,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:02:11,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:02:11,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:02:11,051 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:02:11,052 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:02:11,052 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:02:11,054 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:02:11,055 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:02:11,055 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:02:11,056 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:02:11,056 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:02:11,056 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:02:11,057 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:02:11,058 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:02:11,058 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:02:11,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:02:11,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:02:11,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:02:11,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:02:11,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:02:11,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:02:11,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:02:11,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:02:11,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:02:11,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:02:11,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:02:11,064 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:02:11,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:02:11,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:02:11,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:02:11,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:02:11,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:02:11,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:02:11,066 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:02:11,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:02:11,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:02:11,067 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:02:11,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:02:11,067 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-06 21:02:11,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:02:11,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:02:11,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:02:11,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:02:11,470 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:02:11,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-06 21:02:14,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:02:15,097 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:02:15,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-06 21:02:15,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/data/962a55025/f7adc987c1d3456cbd0cd07314a1ecee/FLAG9d050983f [2023-11-06 21:02:15,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/data/962a55025/f7adc987c1d3456cbd0cd07314a1ecee [2023-11-06 21:02:15,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:02:15,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:02:15,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:15,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:02:15,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:02:15,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:15" (1/1) ... [2023-11-06 21:02:15,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65572318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:15, skipping insertion in model container [2023-11-06 21:02:15,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:02:15" (1/1) ... [2023-11-06 21:02:15,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:02:15,597 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:02:15,976 WARN L240 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_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2023-11-06 21:02:16,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:16,041 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:02:16,082 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:02:16,132 WARN L240 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_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2023-11-06 21:02:16,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:02:16,260 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:16,260 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:16,260 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:02:16,269 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:02:16,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16 WrapperNode [2023-11-06 21:02:16,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:02:16,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:02:16,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:02:16,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:02:16,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,364 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2023-11-06 21:02:16,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:02:16,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:02:16,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:02:16,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:02:16,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:02:16,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:02:16,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:02:16,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:02:16,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (1/1) ... [2023-11-06 21:02:16,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:02:16,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:02:16,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:02:16,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:02:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:02:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:02:16,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:02:16,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:02:16,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:02:16,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-06 21:02:16,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-06 21:02:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:02:16,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:02:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:02:16,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:02:16,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:02:16,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:02:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:02:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:02:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:02:16,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:02:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:02:16,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:02:16,507 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:02:16,679 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:02:16,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:02:16,946 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:02:16,955 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:02:16,956 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:02:16,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:02:16 BoogieIcfgContainer [2023-11-06 21:02:16,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:02:16,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:02:16,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:02:16,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:02:16,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:02:15" (1/3) ... [2023-11-06 21:02:16,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8d096a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:02:16, skipping insertion in model container [2023-11-06 21:02:16,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:02:16" (2/3) ... [2023-11-06 21:02:16,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8d096a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:02:16, skipping insertion in model container [2023-11-06 21:02:16,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:02:16" (3/3) ... [2023-11-06 21:02:16,971 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-06 21:02:16,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:02:16,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:02:16,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:02:16,996 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:02:17,324 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-06 21:02:17,385 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:02:17,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 197 transitions, 491 flow [2023-11-06 21:02:17,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 197 transitions, 491 flow [2023-11-06 21:02:17,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 197 transitions, 491 flow [2023-11-06 21:02:17,584 INFO L124 PetriNetUnfolderBase]: 7/134 cut-off events. [2023-11-06 21:02:17,584 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:02:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 134 events. 7/134 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2023-11-06 21:02:17,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-06 21:02:23,536 INFO L134 LiptonReduction]: Checked pairs total: 4683 [2023-11-06 21:02:23,536 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-11-06 21:02:23,547 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 81 transitions, 259 flow [2023-11-06 21:02:23,691 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 742 states, 741 states have (on average 3.477732793522267) internal successors, (2577), 741 states have internal predecessors, (2577), 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) [2023-11-06 21:02:23,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:02:23,720 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;@43e05ed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:02:23,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 21:02:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 742 states, 741 states have (on average 3.477732793522267) internal successors, (2577), 741 states have internal predecessors, (2577), 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) [2023-11-06 21:02:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:02:23,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:23,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:02:23,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-06 21:02:23,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1312812669, now seen corresponding path program 1 times [2023-11-06 21:02:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:02:23,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825660544] [2023-11-06 21:02:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:02:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:02:24,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:02:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825660544] [2023-11-06 21:02:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825660544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:24,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:24,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:02:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488596614] [2023-11-06 21:02:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:02:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:02:24,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:02:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:02:24,773 INFO L87 Difference]: Start difference. First operand has 742 states, 741 states have (on average 3.477732793522267) internal successors, (2577), 741 states have internal predecessors, (2577), 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 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-06 21:02:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:02:25,008 INFO L93 Difference]: Finished difference Result 1027 states and 3418 transitions. [2023-11-06 21:02:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:02:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2023-11-06 21:02:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:02:25,058 INFO L225 Difference]: With dead ends: 1027 [2023-11-06 21:02:25,059 INFO L226 Difference]: Without dead ends: 978 [2023-11-06 21:02:25,060 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 [2023-11-06 21:02:25,065 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:02:25,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:02:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2023-11-06 21:02:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 722. [2023-11-06 21:02:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 3.438280166435506) internal successors, (2479), 721 states have internal predecessors, (2479), 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) [2023-11-06 21:02:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2479 transitions. [2023-11-06 21:02:25,227 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2479 transitions. Word has length 40 [2023-11-06 21:02:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:02:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 2479 transitions. [2023-11-06 21:02:25,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-06 21:02:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2479 transitions. [2023-11-06 21:02:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:02:25,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:25,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:02:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:02:25,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-06 21:02:25,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash -146154999, now seen corresponding path program 2 times [2023-11-06 21:02:25,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:02:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63399262] [2023-11-06 21:02:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:25,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:02:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:02:25,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:02:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63399262] [2023-11-06 21:02:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63399262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:02:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791897883] [2023-11-06 21:02:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:02:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:02:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:02:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:02:25,658 INFO L87 Difference]: Start difference. First operand 722 states and 2479 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-06 21:02:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:02:25,836 INFO L93 Difference]: Finished difference Result 1115 states and 3801 transitions. [2023-11-06 21:02:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:02:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2023-11-06 21:02:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:02:25,839 INFO L225 Difference]: With dead ends: 1115 [2023-11-06 21:02:25,839 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:02:25,841 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 [2023-11-06 21:02:25,843 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:02:25,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 27 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:02:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:02:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:02:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:02:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:02:25,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-11-06 21:02:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:02:25,851 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:02:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2023-11-06 21:02:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:02:25,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:02:25,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-06 21:02:25,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2023-11-06 21:02:25,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2023-11-06 21:02:25,869 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2023-11-06 21:02:25,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2023-11-06 21:02:25,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2023-11-06 21:02:25,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2023-11-06 21:02:25,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-11-06 21:02:25,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-11-06 21:02:25,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-11-06 21:02:25,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-06 21:02:25,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-06 21:02:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:02:25,882 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-11-06 21:02:25,886 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:02:25,887 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:02:25,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:02:25 BasicIcfg [2023-11-06 21:02:25,891 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:02:25,892 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:02:25,892 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:02:25,893 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:02:25,894 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:02:16" (3/4) ... [2023-11-06 21:02:25,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:02:25,903 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2023-11-06 21:02:25,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 21:02:25,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 21:02:25,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 21:02:25,913 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-06 21:02:25,913 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:02:25,914 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:02:25,914 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:02:25,993 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 21:02:25,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 21:02:25,998 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:02:25,999 INFO L158 Benchmark]: Toolchain (without parser) took 10835.20ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 124.3MB in the beginning and 110.6MB in the end (delta: 13.7MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,000 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:02:26,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1104.34ms. Allocated memory is still 157.3MB. Free memory was 124.3MB in the beginning and 90.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.20ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 88.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,001 INFO L158 Benchmark]: Boogie Preprocessor took 43.98ms. Allocated memory is still 157.3MB. Free memory was 88.3MB in the beginning and 86.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,002 INFO L158 Benchmark]: RCFGBuilder took 549.14ms. Allocated memory is still 157.3MB. Free memory was 86.6MB in the beginning and 70.2MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,002 INFO L158 Benchmark]: TraceAbstraction took 8929.55ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 69.4MB in the beginning and 113.8MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:02:26,003 INFO L158 Benchmark]: Witness Printer took 106.18ms. Allocated memory is still 195.0MB. Free memory was 113.8MB in the beginning and 110.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:02:26,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1104.34ms. Allocated memory is still 157.3MB. Free memory was 124.3MB in the beginning and 90.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.20ms. Allocated memory is still 157.3MB. Free memory was 90.7MB in the beginning and 88.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.98ms. Allocated memory is still 157.3MB. Free memory was 88.3MB in the beginning and 86.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.14ms. Allocated memory is still 157.3MB. Free memory was 86.6MB in the beginning and 70.2MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8929.55ms. Allocated memory was 157.3MB in the beginning and 195.0MB in the end (delta: 37.7MB). Free memory was 69.4MB in the beginning and 113.8MB in the end (delta: -44.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.18ms. Allocated memory is still 195.0MB. Free memory was 113.8MB in the beginning and 110.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 206 PlacesBefore, 92 PlacesAfterwards, 197 TransitionsBefore, 81 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 6 FixpointIterations, 64 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 127 TotalNumberOfCompositions, 4683 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2551, independent: 2347, independent conditional: 0, independent unconditional: 2347, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 928, independent: 893, independent conditional: 0, independent unconditional: 893, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 928, independent: 888, independent conditional: 0, independent unconditional: 888, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2551, independent: 1454, independent conditional: 0, independent unconditional: 1454, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 928, unknown conditional: 0, unknown unconditional: 928] , Statistics on independence cache: Total cache size (in pairs): 145, Positive cache size: 131, Positive conditional cache size: 0, Positive unconditional cache size: 131, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1123]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 226 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 172 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 33 mSDtfsCounter, 172 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 256 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:02:26,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b402c4c-a8cd-40fa-a208-b79c183a6f6d/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE