./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:01:31,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:01:31,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:01:31,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:01:31,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:01:31,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:01:31,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:01:31,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:01:31,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:01:31,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:01:31,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:01:31,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:01:31,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:01:31,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:01:31,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:01:31,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:01:31,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:01:31,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:01:31,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:01:31,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:01:31,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:01:31,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:01:31,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:01:31,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:01:31,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:01:31,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:01:31,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:01:31,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:01:31,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:01:31,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:01:31,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:01:31,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:01:31,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:01:31,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:01:31,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:01:31,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:01:31,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:01:31,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:01:31,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:01:31,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:01:31,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:01:31,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:01:31,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:01:31,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:01:31,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:01:31,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:01:31,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:01:31,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:01:31,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:01:31,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:01:31,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:01:31,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:01:31,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:01:31,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:01:31,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:01:31,884 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:01:31,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:01:31,884 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:01:31,884 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_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2022-12-13 13:01:32,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:01:32,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:01:32,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:01:32,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:01:32,080 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:01:32,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/stateful01-2.i [2022-12-13 13:01:34,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:01:34,920 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:01:34,921 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/sv-benchmarks/c/pthread/stateful01-2.i [2022-12-13 13:01:34,933 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/data/ae507e25e/14cd579ac31a4e09a3bcce598a95d3ab/FLAG8b7925c8f [2022-12-13 13:01:34,945 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/data/ae507e25e/14cd579ac31a4e09a3bcce598a95d3ab [2022-12-13 13:01:34,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:01:34,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:01:34,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:01:34,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:01:34,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:01:34,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:01:34" (1/1) ... [2022-12-13 13:01:34,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b268030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:34, skipping insertion in model container [2022-12-13 13:01:34,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:01:34" (1/1) ... [2022-12-13 13:01:34,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:01:34,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:01:35,169 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_e839f67f-eb2d-442e-8846-2622d51be56b/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-12-13 13:01:35,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:01:35,182 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:01:35,209 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_e839f67f-eb2d-442e-8846-2622d51be56b/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-12-13 13:01:35,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:01:35,232 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:01:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35 WrapperNode [2022-12-13 13:01:35,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:01:35,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:01:35,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:01:35,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:01:35,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,262 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-13 13:01:35,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:01:35,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:01:35,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:01:35,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:01:35,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:01:35,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:01:35,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:01:35,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:01:35,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (1/1) ... [2022-12-13 13:01:35,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:01:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:01:35,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:01:35,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:01:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:01:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:01:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:01:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:01:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:01:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:01:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:01:35,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:01:35,343 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:01:35,439 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:01:35,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:01:35,582 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:01:35,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:01:35,589 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:01:35,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:35 BoogieIcfgContainer [2022-12-13 13:01:35,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:01:35,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:01:35,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:01:35,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:01:35,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:01:34" (1/3) ... [2022-12-13 13:01:35,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773145ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:01:35, skipping insertion in model container [2022-12-13 13:01:35,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:35" (2/3) ... [2022-12-13 13:01:35,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773145ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:01:35, skipping insertion in model container [2022-12-13 13:01:35,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:35" (3/3) ... [2022-12-13 13:01:35,597 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2022-12-13 13:01:35,604 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:01:35,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:01:35,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:01:35,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:01:35,661 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:01:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-12-13 13:01:35,738 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-12-13 13:01:35,739 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:01:35,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-12-13 13:01:35,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2022-12-13 13:01:35,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2022-12-13 13:01:35,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:01:35,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 172 flow [2022-12-13 13:01:35,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 172 flow [2022-12-13 13:01:35,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 172 flow [2022-12-13 13:01:35,790 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2022-12-13 13:01:35,791 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:01:35,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 0/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 13:01:35,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2022-12-13 13:01:38,502 INFO L134 LiptonReduction]: Checked pairs total: 2337 [2022-12-13 13:01:38,502 INFO L136 LiptonReduction]: Total number of compositions: 57 [2022-12-13 13:01:38,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:01:38,517 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;@619e0256, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:01:38,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 13:01:38,521 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-13 13:01:38,521 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:01:38,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:01:38,522 INFO L209 CegarLoopForPetriNet]: 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] [2022-12-13 13:01:38,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:01:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:01:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 538496458, now seen corresponding path program 1 times [2022-12-13 13:01:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:01:38,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860398050] [2022-12-13 13:01:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:01:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:01:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:01:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:01:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:01:38,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860398050] [2022-12-13 13:01:38,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860398050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:01:38,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:01:38,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:01:38,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320793165] [2022-12-13 13:01:38,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:01:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:01:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:01:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:01:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:01:38,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2022-12-13 13:01:38,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:38,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:01:38,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2022-12-13 13:01:38,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:01:39,145 INFO L130 PetriNetUnfolder]: 157/345 cut-off events. [2022-12-13 13:01:39,145 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 13:01:39,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 345 events. 157/345 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1468 event pairs, 43 based on Foata normal form. 1/344 useless extension candidates. Maximal degree in co-relation 604. Up to 156 conditions per place. [2022-12-13 13:01:39,148 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 25 selfloop transitions, 4 changer transitions 19/51 dead transitions. [2022-12-13 13:01:39,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 219 flow [2022-12-13 13:01:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:01:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:01:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2022-12-13 13:01:39,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.58 [2022-12-13 13:01:39,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2022-12-13 13:01:39,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2022-12-13 13:01:39,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:01:39,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2022-12-13 13:01:39,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,174 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 7 states and 609 transitions. [2022-12-13 13:01:39,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 219 flow [2022-12-13 13:01:39,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 205 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:01:39,178 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 75 flow [2022-12-13 13:01:39,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2022-12-13 13:01:39,181 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2022-12-13 13:01:39,181 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 75 flow [2022-12-13 13:01:39,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:01:39,182 INFO L209 CegarLoopForPetriNet]: 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] [2022-12-13 13:01:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:01:39,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:01:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:01:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash 208025596, now seen corresponding path program 2 times [2022-12-13 13:01:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:01:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589945134] [2022-12-13 13:01:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:01:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:01:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:01:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:01:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:01:39,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589945134] [2022-12-13 13:01:39,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589945134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:01:39,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:01:39,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:01:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952076030] [2022-12-13 13:01:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:01:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:01:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:01:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:01:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:01:39,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2022-12-13 13:01:39,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:01:39,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2022-12-13 13:01:39,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:01:39,351 INFO L130 PetriNetUnfolder]: 55/160 cut-off events. [2022-12-13 13:01:39,351 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 13:01:39,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 160 events. 55/160 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 521 event pairs, 20 based on Foata normal form. 28/188 useless extension candidates. Maximal degree in co-relation 337. Up to 91 conditions per place. [2022-12-13 13:01:39,354 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 17 selfloop transitions, 8 changer transitions 1/29 dead transitions. [2022-12-13 13:01:39,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 132 flow [2022-12-13 13:01:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:01:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:01:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-12-13 13:01:39,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5711111111111111 [2022-12-13 13:01:39,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-12-13 13:01:39,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-12-13 13:01:39,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:01:39,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-12-13 13:01:39,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,357 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 75 flow. Second operand 3 states and 257 transitions. [2022-12-13 13:01:39,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 132 flow [2022-12-13 13:01:39,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 126 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 13:01:39,358 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 74 flow [2022-12-13 13:01:39,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-13 13:01:39,359 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-12-13 13:01:39,359 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 74 flow [2022-12-13 13:01:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:01:39,360 INFO L209 CegarLoopForPetriNet]: 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] [2022-12-13 13:01:39,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:01:39,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 13:01:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:01:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -508919238, now seen corresponding path program 3 times [2022-12-13 13:01:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:01:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293195160] [2022-12-13 13:01:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:01:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:01:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:01:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:01:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:01:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293195160] [2022-12-13 13:01:39,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293195160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:01:39,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:01:39,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:01:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390936162] [2022-12-13 13:01:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:01:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:01:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:01:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:01:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:01:39,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2022-12-13 13:01:39,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:01:39,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2022-12-13 13:01:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:01:39,587 INFO L130 PetriNetUnfolder]: 46/136 cut-off events. [2022-12-13 13:01:39,587 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 13:01:39,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 136 events. 46/136 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 393 event pairs, 6 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 115. Up to 47 conditions per place. [2022-12-13 13:01:39,588 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2022-12-13 13:01:39,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 182 flow [2022-12-13 13:01:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:01:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:01:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2022-12-13 13:01:39,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5676190476190476 [2022-12-13 13:01:39,590 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2022-12-13 13:01:39,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2022-12-13 13:01:39,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:01:39,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2022-12-13 13:01:39,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,595 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 74 flow. Second operand 7 states and 596 transitions. [2022-12-13 13:01:39,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 182 flow [2022-12-13 13:01:39,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 168 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 13:01:39,597 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2022-12-13 13:01:39,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2022-12-13 13:01:39,598 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2022-12-13 13:01:39,598 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2022-12-13 13:01:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:01:39,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 13:01:39,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 13:01:39,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 13:01:39,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:01:39,602 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2022-12-13 13:01:39,606 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:01:39,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:01:39,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:01:39 BasicIcfg [2022-12-13 13:01:39,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:01:39,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:01:39,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:01:39,610 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:01:39,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:35" (3/4) ... [2022-12-13 13:01:39,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:01:39,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 13:01:39,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 13:01:39,623 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 13:01:39,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:01:39,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:01:39,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:01:39,654 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:01:39,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:01:39,655 INFO L158 Benchmark]: Toolchain (without parser) took 4706.65ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 101.8MB in the beginning and 121.5MB in the end (delta: -19.7MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,655 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:01:39,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.24ms. Allocated memory is still 138.4MB. Free memory was 101.3MB in the beginning and 82.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.38ms. Allocated memory is still 138.4MB. Free memory was 81.9MB in the beginning and 80.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,656 INFO L158 Benchmark]: Boogie Preprocessor took 16.81ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 78.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,657 INFO L158 Benchmark]: RCFGBuilder took 309.98ms. Allocated memory is still 138.4MB. Free memory was 78.8MB in the beginning and 64.6MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,657 INFO L158 Benchmark]: TraceAbstraction took 4017.41ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 64.1MB in the beginning and 124.6MB in the end (delta: -60.6MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,657 INFO L158 Benchmark]: Witness Printer took 44.52ms. Allocated memory is still 167.8MB. Free memory was 124.6MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:01:39,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.24ms. Allocated memory is still 138.4MB. Free memory was 101.3MB in the beginning and 82.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.38ms. Allocated memory is still 138.4MB. Free memory was 81.9MB in the beginning and 80.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.81ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 78.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 309.98ms. Allocated memory is still 138.4MB. Free memory was 78.8MB in the beginning and 64.6MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4017.41ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 64.1MB in the beginning and 124.6MB in the end (delta: -60.6MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. * Witness Printer took 44.52ms. Allocated memory is still 167.8MB. Free memory was 124.6MB in the beginning and 121.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 87 PlacesBefore, 30 PlacesAfterwards, 80 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2337 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1240, independent: 1080, independent conditional: 0, independent unconditional: 1080, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 379, independent: 359, independent conditional: 0, independent unconditional: 359, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1240, independent: 721, independent conditional: 0, independent unconditional: 721, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 379, unknown conditional: 0, unknown unconditional: 379] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 398 IncrementalHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 23 mSDtfsCounter, 398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-12-13 13:01:39,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e839f67f-eb2d-442e-8846-2622d51be56b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE