./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.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_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/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_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/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_9d731807-068b-43a2-bea2-0b5d39e41695/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 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- 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 15:04:32,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:04:32,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:04:32,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:04:32,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:04:32,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:04:32,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:04:32,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:04:32,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:04:32,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:04:32,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:04:32,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:04:32,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:04:32,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:04:32,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:04:32,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:04:32,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:04:32,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:04:32,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:04:32,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:04:32,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:04:32,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:04:32,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:04:32,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:04:32,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:04:32,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:04:32,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:04:32,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:04:32,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:04:32,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:04:32,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:04:32,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:04:32,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:04:32,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:04:32,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:04:32,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:04:32,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:04:32,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:04:32,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:04:32,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:04:32,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:04:32,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:04:32,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:04:32,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:04:32,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:04:32,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:04:32,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:04:32,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:04:32,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:04:32,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:04:32,454 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:04:32,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:04:32,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:04:32,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:04:32,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:04:32,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:04:32,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:04:32,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:04:32,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:04:32,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:04:32,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:04:32,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:04:32,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:04:32,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:04:32,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:04:32,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:04:32,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:04:32,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:04:32,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:04:32,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:04:32,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:04:32,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:04:32,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:04:32,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:04:32,459 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:04:32,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:04:32,459 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:04:32,459 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_9d731807-068b-43a2-bea2-0b5d39e41695/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2022-12-13 15:04:32,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:04:32,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:04:32,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:04:32,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:04:32,644 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:04:32,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2022-12-13 15:04:35,263 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:04:35,428 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:04:35,428 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2022-12-13 15:04:35,437 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/data/bd4f833b8/c6f46b98dc024719a5ddefd282612d1d/FLAGa392edcf1 [2022-12-13 15:04:35,447 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/data/bd4f833b8/c6f46b98dc024719a5ddefd282612d1d [2022-12-13 15:04:35,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:04:35,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:04:35,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:04:35,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:04:35,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:04:35,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec708b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35, skipping insertion in model container [2022-12-13 15:04:35,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:04:35,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:04:35,597 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_9d731807-068b-43a2-bea2-0b5d39e41695/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i[1086,1099] [2022-12-13 15:04:35,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:04:35,698 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:04:35,706 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_9d731807-068b-43a2-bea2-0b5d39e41695/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i[1086,1099] [2022-12-13 15:04:35,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:04:35,759 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:04:35,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35 WrapperNode [2022-12-13 15:04:35,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:04:35,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:04:35,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:04:35,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:04:35,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,800 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 76 [2022-12-13 15:04:35,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:04:35,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:04:35,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:04:35,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:04:35,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:04:35,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:04:35,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:04:35,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:04:35,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (1/1) ... [2022-12-13 15:04:35,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:04:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:04:35,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:04:35,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:04:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:04:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:04:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 15:04:35,885 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:04:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:04:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:04:35,887 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 15:04:35,975 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:04:35,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:04:36,108 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:04:36,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:04:36,116 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:04:36,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:04:36 BoogieIcfgContainer [2022-12-13 15:04:36,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:04:36,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:04:36,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:04:36,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:04:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:04:35" (1/3) ... [2022-12-13 15:04:36,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c30af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:04:36, skipping insertion in model container [2022-12-13 15:04:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:04:35" (2/3) ... [2022-12-13 15:04:36,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c30af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:04:36, skipping insertion in model container [2022-12-13 15:04:36,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:04:36" (3/3) ... [2022-12-13 15:04:36,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2022-12-13 15:04:36,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:04:36,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:04:36,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 15:04:36,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:04:36,205 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 15:04:36,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 200 flow [2022-12-13 15:04:36,280 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-12-13 15:04:36,280 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:04:36,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 4/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 15:04:36,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 200 flow [2022-12-13 15:04:36,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 177 flow [2022-12-13 15:04:36,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:04:36,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions, 177 flow [2022-12-13 15:04:36,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 87 transitions, 177 flow [2022-12-13 15:04:36,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 177 flow [2022-12-13 15:04:36,333 INFO L130 PetriNetUnfolder]: 4/87 cut-off events. [2022-12-13 15:04:36,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:04:36,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 4/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 15:04:36,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-12-13 15:04:38,117 INFO L134 LiptonReduction]: Checked pairs total: 3058 [2022-12-13 15:04:38,117 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-12-13 15:04:38,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:04:38,132 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;@9b4fb4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:04:38,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 15:04:38,133 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 15:04:38,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:04:38,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:38,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:04:38,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 360, now seen corresponding path program 1 times [2022-12-13 15:04:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:38,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675658882] [2022-12-13 15:04:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:38,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:38,240 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 15:04:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:38,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675658882] [2022-12-13 15:04:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675658882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:04:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929195051] [2022-12-13 15:04:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:38,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:04:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:04:38,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:04:38,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 182 [2022-12-13 15:04:38,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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 15:04:38,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:38,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 182 [2022-12-13 15:04:38,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:38,325 INFO L130 PetriNetUnfolder]: 72/163 cut-off events. [2022-12-13 15:04:38,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:04:38,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 163 events. 72/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 556 event pairs, 72 based on Foata normal form. 9/135 useless extension candidates. Maximal degree in co-relation 322. Up to 164 conditions per place. [2022-12-13 15:04:38,328 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-12-13 15:04:38,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 79 flow [2022-12-13 15:04:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:04:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:04:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 195 transitions. [2022-12-13 15:04:38,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2022-12-13 15:04:38,339 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 195 transitions. [2022-12-13 15:04:38,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 195 transitions. [2022-12-13 15:04:38,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:38,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 195 transitions. [2022-12-13 15:04:38,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 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 15:04:38,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 15:04:38,350 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 15:04:38,352 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 51 flow. Second operand 2 states and 195 transitions. [2022-12-13 15:04:38,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 79 flow [2022-12-13 15:04:38,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:04:38,355 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 40 flow [2022-12-13 15:04:38,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-12-13 15:04:38,359 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2022-12-13 15:04:38,360 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 40 flow [2022-12-13 15:04:38,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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 15:04:38,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:38,360 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:04:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:04:38,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 10997762, now seen corresponding path program 1 times [2022-12-13 15:04:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:38,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198278536] [2022-12-13 15:04:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:38,624 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 15:04:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198278536] [2022-12-13 15:04:38,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198278536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:38,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:38,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:04:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120398587] [2022-12-13 15:04:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:04:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:04:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:04:38,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 182 [2022-12-13 15:04:38,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 15:04:38,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:38,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 182 [2022-12-13 15:04:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:38,703 INFO L130 PetriNetUnfolder]: 71/162 cut-off events. [2022-12-13 15:04:38,703 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:04:38,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 162 events. 71/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 39 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 326. Up to 139 conditions per place. [2022-12-13 15:04:38,704 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 25 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2022-12-13 15:04:38,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 122 flow [2022-12-13 15:04:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:04:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:04:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2022-12-13 15:04:38,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5036630036630036 [2022-12-13 15:04:38,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2022-12-13 15:04:38,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2022-12-13 15:04:38,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:38,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2022-12-13 15:04:38,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 15:04:38,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:38,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:38,712 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 40 flow. Second operand 3 states and 275 transitions. [2022-12-13 15:04:38,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 122 flow [2022-12-13 15:04:38,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:04:38,713 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 80 flow [2022-12-13 15:04:38,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2022-12-13 15:04:38,714 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-12-13 15:04:38,714 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 80 flow [2022-12-13 15:04:38,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 15:04:38,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:38,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:04:38,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:04:38,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1978356480, now seen corresponding path program 1 times [2022-12-13 15:04:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:38,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288036555] [2022-12-13 15:04:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:38,846 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 15:04:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:38,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288036555] [2022-12-13 15:04:38,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288036555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:38,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:38,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:04:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703338647] [2022-12-13 15:04:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:04:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:04:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:04:38,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 182 [2022-12-13 15:04:38,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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 15:04:38,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:38,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 182 [2022-12-13 15:04:38,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:38,981 INFO L130 PetriNetUnfolder]: 75/177 cut-off events. [2022-12-13 15:04:38,981 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 15:04:38,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 177 events. 75/177 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 690 event pairs, 22 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 421. Up to 110 conditions per place. [2022-12-13 15:04:38,982 INFO L137 encePairwiseOnDemand]: 174/182 looper letters, 30 selfloop transitions, 10 changer transitions 5/45 dead transitions. [2022-12-13 15:04:38,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 226 flow [2022-12-13 15:04:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:04:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:04:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2022-12-13 15:04:38,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4716117216117216 [2022-12-13 15:04:38,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2022-12-13 15:04:38,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2022-12-13 15:04:38,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:38,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2022-12-13 15:04:38,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 15:04:38,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 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 15:04:38,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 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 15:04:38,988 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 80 flow. Second operand 6 states and 515 transitions. [2022-12-13 15:04:38,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 226 flow [2022-12-13 15:04:38,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:04:38,989 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 125 flow [2022-12-13 15:04:38,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 15:04:38,990 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 15:04:38,990 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 125 flow [2022-12-13 15:04:38,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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 15:04:38,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:38,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:04:38,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:04:38,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1978918104, now seen corresponding path program 1 times [2022-12-13 15:04:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:38,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728378259] [2022-12-13 15:04:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:39,021 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 15:04:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:39,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728378259] [2022-12-13 15:04:39,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728378259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:39,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:39,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:04:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038482638] [2022-12-13 15:04:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:04:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:04:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:04:39,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 182 [2022-12-13 15:04:39,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 15:04:39,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:39,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 182 [2022-12-13 15:04:39,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:39,091 INFO L130 PetriNetUnfolder]: 77/182 cut-off events. [2022-12-13 15:04:39,091 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-12-13 15:04:39,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 182 events. 77/182 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 712 event pairs, 33 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 513. Up to 151 conditions per place. [2022-12-13 15:04:39,092 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 27 selfloop transitions, 7 changer transitions 4/38 dead transitions. [2022-12-13 15:04:39,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 243 flow [2022-12-13 15:04:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:04:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:04:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-12-13 15:04:39,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2022-12-13 15:04:39,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-12-13 15:04:39,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-12-13 15:04:39,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:39,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-12-13 15:04:39,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 15:04:39,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:39,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:39,096 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 125 flow. Second operand 3 states and 272 transitions. [2022-12-13 15:04:39,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 243 flow [2022-12-13 15:04:39,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 239 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 15:04:39,098 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 155 flow [2022-12-13 15:04:39,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-12-13 15:04:39,098 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2022-12-13 15:04:39,099 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 155 flow [2022-12-13 15:04:39,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 15:04:39,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:39,099 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:04:39,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:04:39,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1200659937, now seen corresponding path program 1 times [2022-12-13 15:04:39,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:39,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348729328] [2022-12-13 15:04:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:39,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:39,134 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 15:04:39,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:39,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348729328] [2022-12-13 15:04:39,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348729328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:39,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:39,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:04:39,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177055215] [2022-12-13 15:04:39,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:39,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:04:39,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:39,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:04:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:04:39,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 182 [2022-12-13 15:04:39,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 15:04:39,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:39,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 182 [2022-12-13 15:04:39,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:39,178 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-12-13 15:04:39,178 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 15:04:39,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 25 events. 0/25 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 11/36 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2022-12-13 15:04:39,178 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 15 selfloop transitions, 4 changer transitions 1/20 dead transitions. [2022-12-13 15:04:39,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 133 flow [2022-12-13 15:04:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:04:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:04:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 15:04:39,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47985347985347987 [2022-12-13 15:04:39,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 15:04:39,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 15:04:39,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:39,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 15:04:39,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 15:04:39,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:39,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 15:04:39,184 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 155 flow. Second operand 3 states and 262 transitions. [2022-12-13 15:04:39,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 133 flow [2022-12-13 15:04:39,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 112 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 15:04:39,185 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 76 flow [2022-12-13 15:04:39,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2022-12-13 15:04:39,186 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-13 15:04:39,186 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 76 flow [2022-12-13 15:04:39,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 15:04:39,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:39,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:04:39,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:04:39,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 418695397, now seen corresponding path program 1 times [2022-12-13 15:04:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498983927] [2022-12-13 15:04:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:39,317 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 15:04:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498983927] [2022-12-13 15:04:39,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498983927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:39,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:39,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:04:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757621581] [2022-12-13 15:04:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:39,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:04:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:04:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:04:39,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2022-12-13 15:04:39,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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 15:04:39,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:39,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2022-12-13 15:04:39,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:39,408 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-13 15:04:39,409 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:04:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 22 events. 0/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-12-13 15:04:39,409 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 10 selfloop transitions, 2 changer transitions 9/21 dead transitions. [2022-12-13 15:04:39,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 21 transitions, 122 flow [2022-12-13 15:04:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:04:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:04:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 478 transitions. [2022-12-13 15:04:39,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43772893772893773 [2022-12-13 15:04:39,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 478 transitions. [2022-12-13 15:04:39,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 478 transitions. [2022-12-13 15:04:39,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:39,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 478 transitions. [2022-12-13 15:04:39,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 15:04:39,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 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 15:04:39,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 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 15:04:39,416 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 76 flow. Second operand 6 states and 478 transitions. [2022-12-13 15:04:39,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 21 transitions, 122 flow [2022-12-13 15:04:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:04:39,417 INFO L231 Difference]: Finished difference. Result has 33 places, 12 transitions, 49 flow [2022-12-13 15:04:39,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=49, PETRI_PLACES=33, PETRI_TRANSITIONS=12} [2022-12-13 15:04:39,418 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 15:04:39,418 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 12 transitions, 49 flow [2022-12-13 15:04:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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 15:04:39,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:04:39,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:04:39,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:04:39,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:04:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:04:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2106540198, now seen corresponding path program 1 times [2022-12-13 15:04:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:04:39,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406051036] [2022-12-13 15:04:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:04:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:04:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:04:39,526 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 15:04:39,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:04:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406051036] [2022-12-13 15:04:39,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406051036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:04:39,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:04:39,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:04:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793784377] [2022-12-13 15:04:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:04:39,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:04:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:04:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:04:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:04:39,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2022-12-13 15:04:39,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 12 transitions, 49 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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 15:04:39,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:04:39,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2022-12-13 15:04:39,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:04:39,626 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 15:04:39,626 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:04:39,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-12-13 15:04:39,626 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2022-12-13 15:04:39,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 12 transitions, 72 flow [2022-12-13 15:04:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:04:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:04:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2022-12-13 15:04:39,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42778649921507067 [2022-12-13 15:04:39,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2022-12-13 15:04:39,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2022-12-13 15:04:39,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:04:39,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2022-12-13 15:04:39,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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 15:04:39,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 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 15:04:39,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 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 15:04:39,633 INFO L175 Difference]: Start difference. First operand has 33 places, 12 transitions, 49 flow. Second operand 7 states and 545 transitions. [2022-12-13 15:04:39,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 12 transitions, 72 flow [2022-12-13 15:04:39,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 15:04:39,634 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2022-12-13 15:04:39,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2022-12-13 15:04:39,635 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2022-12-13 15:04:39,635 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2022-12-13 15:04:39,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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 15:04:39,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 15:04:39,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 15:04:39,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 15:04:39,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-12-13 15:04:39,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-12-13 15:04:39,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-13 15:04:39,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 15:04:39,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:04:39,639 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:04:39,644 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:04:39,644 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:04:39,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:04:39 BasicIcfg [2022-12-13 15:04:39,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:04:39,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:04:39,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:04:39,648 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:04:39,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:04:36" (3/4) ... [2022-12-13 15:04:39,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:04:39,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 15:04:39,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-13 15:04:39,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 15:04:39,661 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 15:04:39,661 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:04:39,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:04:39,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:04:39,685 INFO L158 Benchmark]: Toolchain (without parser) took 4235.00ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 105.0MB in the beginning and 88.7MB in the end (delta: 16.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,685 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:04:39,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.16ms. Allocated memory is still 140.5MB. Free memory was 105.0MB in the beginning and 86.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.98ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,686 INFO L158 Benchmark]: Boogie Preprocessor took 23.29ms. Allocated memory is still 140.5MB. Free memory was 84.0MB in the beginning and 82.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:04:39,686 INFO L158 Benchmark]: RCFGBuilder took 292.48ms. Allocated memory is still 140.5MB. Free memory was 82.6MB in the beginning and 69.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,687 INFO L158 Benchmark]: TraceAbstraction took 3527.01ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 68.9MB in the beginning and 91.8MB in the end (delta: -23.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,687 INFO L158 Benchmark]: Witness Printer took 36.74ms. Allocated memory is still 190.8MB. Free memory was 91.8MB in the beginning and 88.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:04:39,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.16ms. Allocated memory is still 140.5MB. Free memory was 105.0MB in the beginning and 86.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.98ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.29ms. Allocated memory is still 140.5MB. Free memory was 84.0MB in the beginning and 82.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 292.48ms. Allocated memory is still 140.5MB. Free memory was 82.6MB in the beginning and 69.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3527.01ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 68.9MB in the beginning and 91.8MB in the end (delta: -23.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 36.74ms. Allocated memory is still 190.8MB. Free memory was 91.8MB in the beginning and 88.7MB 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: 1.8s, 87 PlacesBefore, 25 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 3058 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1548, independent: 1374, independent conditional: 0, independent unconditional: 1374, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 789, independent: 750, independent conditional: 0, independent unconditional: 750, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1548, independent: 624, independent conditional: 0, independent unconditional: 624, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 789, unknown conditional: 0, unknown unconditional: 789] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 123 locations, 7 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: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 240 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 608 IncrementalHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 33 mSDtfsCounter, 608 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=4, InterpolantAutomatonStates: 30, 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, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:04:39,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d731807-068b-43a2-bea2-0b5d39e41695/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