./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.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_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/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_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/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_060c4717-b82b-4a59-84db-40b892ab2ef8/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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- 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 20:09:56,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:09:56,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:09:56,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:09:56,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:09:56,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:09:56,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:09:56,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:09:56,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:09:56,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:09:56,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:09:56,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:09:56,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:09:56,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:09:56,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:09:56,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:09:56,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:09:56,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:09:56,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:09:56,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:09:56,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:09:56,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:09:56,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:09:56,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:09:56,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:09:56,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:09:56,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:09:56,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:09:56,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:09:56,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:09:56,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:09:56,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:09:56,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:09:56,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:09:56,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:09:56,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:09:56,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:09:56,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:09:56,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:09:56,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:09:56,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:09:56,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:09:56,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:09:56,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:09:56,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:09:56,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:09:56,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:09:56,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:09:56,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:09:56,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:09:56,625 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:09:56,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:09:56,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:09:56,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:09:56,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:09:56,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:09:56,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:09:56,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:09:56,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:09:56,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:09:56,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:09:56,628 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:09:56,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:09:56,628 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:09:56,628 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_060c4717-b82b-4a59-84db-40b892ab2ef8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-12-13 20:09:56,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:09:56,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:09:56,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:09:56,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:09:56,821 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:09:56,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-12-13 20:09:59,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:09:59,608 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:09:59,608 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-12-13 20:09:59,617 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/data/2baddeec1/bfc5ac3f81e94f7185312c73b0222e00/FLAG56be94b0b [2022-12-13 20:09:59,627 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/data/2baddeec1/bfc5ac3f81e94f7185312c73b0222e00 [2022-12-13 20:09:59,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:09:59,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:09:59,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:09:59,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:09:59,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:09:59,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc17d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59, skipping insertion in model container [2022-12-13 20:09:59,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:09:59,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:09:59,858 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_060c4717-b82b-4a59-84db-40b892ab2ef8/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-12-13 20:09:59,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:09:59,883 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:09:59,903 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_060c4717-b82b-4a59-84db-40b892ab2ef8/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-12-13 20:09:59,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:09:59,931 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:09:59,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59 WrapperNode [2022-12-13 20:09:59,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:09:59,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:09:59,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:09:59,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:09:59,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,962 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2022-12-13 20:09:59,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:09:59,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:09:59,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:09:59,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:09:59,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:09:59,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:09:59,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:09:59,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:09:59,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (1/1) ... [2022-12-13 20:09:59,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:09:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:00,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:10:00,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:10:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:10:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:10:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:10:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:10:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:10:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:10:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:10:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:10:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:10:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:10:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:10:00,040 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 20:10:00,131 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:10:00,132 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:10:00,302 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:10:00,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:10:00,309 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 20:10:00,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:00 BoogieIcfgContainer [2022-12-13 20:10:00,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:10:00,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:10:00,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:10:00,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:10:00,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:09:59" (1/3) ... [2022-12-13 20:10:00,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e91484f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:00, skipping insertion in model container [2022-12-13 20:10:00,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:59" (2/3) ... [2022-12-13 20:10:00,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e91484f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:00, skipping insertion in model container [2022-12-13 20:10:00,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:00" (3/3) ... [2022-12-13 20:10:00,317 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-12-13 20:10:00,323 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:10:00,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:10:00,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:10:00,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:10:00,370 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:10:00,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 119 transitions, 246 flow [2022-12-13 20:10:00,453 INFO L130 PetriNetUnfolder]: 18/155 cut-off events. [2022-12-13 20:10:00,454 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:10:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 155 events. 18/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2022-12-13 20:10:00,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 119 transitions, 246 flow [2022-12-13 20:10:00,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 114 transitions, 233 flow [2022-12-13 20:10:00,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:00,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 114 transitions, 233 flow [2022-12-13 20:10:00,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 114 transitions, 233 flow [2022-12-13 20:10:00,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 114 transitions, 233 flow [2022-12-13 20:10:00,505 INFO L130 PetriNetUnfolder]: 17/150 cut-off events. [2022-12-13 20:10:00,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:00,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 17/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 318 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2022-12-13 20:10:00,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 2352 [2022-12-13 20:10:03,485 INFO L134 LiptonReduction]: Checked pairs total: 3922 [2022-12-13 20:10:03,486 INFO L136 LiptonReduction]: Total number of compositions: 106 [2022-12-13 20:10:03,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:03,502 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;@616ebd53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:03,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:10:03,505 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 20:10:03,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:03,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:03,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:10:03,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 14133999, now seen corresponding path program 1 times [2022-12-13 20:10:03,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:03,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729706888] [2022-12-13 20:10:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:03,746 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 20:10:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:03,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729706888] [2022-12-13 20:10:03,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729706888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:03,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:03,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:10:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496967989] [2022-12-13 20:10:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:03,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:03,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 225 [2022-12-13 20:10:03,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 30 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 20:10:03,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:03,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 225 [2022-12-13 20:10:03,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:03,863 INFO L130 PetriNetUnfolder]: 70/187 cut-off events. [2022-12-13 20:10:03,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:03,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 187 events. 70/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 721 event pairs, 19 based on Foata normal form. 24/194 useless extension candidates. Maximal degree in co-relation 340. Up to 99 conditions per place. [2022-12-13 20:10:03,865 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 17 selfloop transitions, 2 changer transitions 12/33 dead transitions. [2022-12-13 20:10:03,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 131 flow [2022-12-13 20:10:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 20:10:03,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522962962962963 [2022-12-13 20:10:03,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 20:10:03,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 20:10:03,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:03,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 20:10:03,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 20:10:03,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 20:10:03,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 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 20:10:03,885 INFO L175 Difference]: Start difference. First operand has 25 places, 30 transitions, 65 flow. Second operand 3 states and 353 transitions. [2022-12-13 20:10:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 131 flow [2022-12-13 20:10:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:03,888 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 49 flow [2022-12-13 20:10:03,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-12-13 20:10:03,891 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-12-13 20:10:03,892 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 49 flow [2022-12-13 20:10:03,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 20:10:03,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:03,892 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:10:03,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:10:03,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash 706428589, now seen corresponding path program 1 times [2022-12-13 20:10:03,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:03,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723753417] [2022-12-13 20:10:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:03,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:03,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:03,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:03,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:03,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-12-13 20:10:03,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 20:10:03,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:10:03,938 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:10:03,940 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:10:03,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:10:03,954 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:10:03,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,979 INFO L130 PetriNetUnfolder]: 32/246 cut-off events. [2022-12-13 20:10:03,979 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:03,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 32/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 673 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2022-12-13 20:10:03,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:03,982 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,982 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 149 transitions, 316 flow [2022-12-13 20:10:03,999 INFO L130 PetriNetUnfolder]: 32/246 cut-off events. [2022-12-13 20:10:03,999 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:04,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 32/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 673 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2022-12-13 20:10:04,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 6888 [2022-12-13 20:10:06,968 INFO L134 LiptonReduction]: Checked pairs total: 15772 [2022-12-13 20:10:06,968 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-12-13 20:10:06,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:06,970 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;@616ebd53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:06,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:10:06,972 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 20:10:06,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:06,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:06,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:10:06,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:06,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 23217819, now seen corresponding path program 1 times [2022-12-13 20:10:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:06,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680631725] [2022-12-13 20:10:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:06,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:07,021 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 20:10:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680631725] [2022-12-13 20:10:07,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680631725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:07,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:07,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:10:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237328242] [2022-12-13 20:10:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:07,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:07,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:07,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 265 [2022-12-13 20:10:07,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 20:10:07,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:07,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 265 [2022-12-13 20:10:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:07,426 INFO L130 PetriNetUnfolder]: 1972/3601 cut-off events. [2022-12-13 20:10:07,426 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-13 20:10:07,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3601 events. 1972/3601 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22770 event pairs, 624 based on Foata normal form. 790/4015 useless extension candidates. Maximal degree in co-relation 4992. Up to 2252 conditions per place. [2022-12-13 20:10:07,437 INFO L137 encePairwiseOnDemand]: 244/265 looper letters, 32 selfloop transitions, 3 changer transitions 26/69 dead transitions. [2022-12-13 20:10:07,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 285 flow [2022-12-13 20:10:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-12-13 20:10:07,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5710691823899371 [2022-12-13 20:10:07,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-12-13 20:10:07,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-12-13 20:10:07,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:07,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-12-13 20:10:07,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 20:10:07,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 20:10:07,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 20:10:07,446 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 128 flow. Second operand 3 states and 454 transitions. [2022-12-13 20:10:07,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 285 flow [2022-12-13 20:10:07,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:07,449 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 99 flow [2022-12-13 20:10:07,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2022-12-13 20:10:07,449 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2022-12-13 20:10:07,450 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 99 flow [2022-12-13 20:10:07,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 20:10:07,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:07,450 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:10:07,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:10:07,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 328726968, now seen corresponding path program 1 times [2022-12-13 20:10:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:07,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104743262] [2022-12-13 20:10:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:07,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:07,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:07,489 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:07,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-12-13 20:10:07,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 20:10:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:10:07,490 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:10:07,490 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:10:07,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:10:07,506 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:10:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,538 INFO L130 PetriNetUnfolder]: 51/370 cut-off events. [2022-12-13 20:10:07,538 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:10:07,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 370 events. 51/370 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1164 event pairs, 1 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2022-12-13 20:10:07,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:07,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,542 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 179 transitions, 388 flow [2022-12-13 20:10:07,568 INFO L130 PetriNetUnfolder]: 51/370 cut-off events. [2022-12-13 20:10:07,568 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:10:07,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 370 events. 51/370 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1164 event pairs, 1 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2022-12-13 20:10:07,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 12936 [2022-12-13 20:10:10,900 INFO L134 LiptonReduction]: Checked pairs total: 37343 [2022-12-13 20:10:10,900 INFO L136 LiptonReduction]: Total number of compositions: 131 [2022-12-13 20:10:10,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:10,903 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;@616ebd53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:10,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:10:10,905 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 20:10:10,905 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:10,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:10,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:10:10,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 33684131, now seen corresponding path program 1 times [2022-12-13 20:10:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:10,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487669223] [2022-12-13 20:10:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:10,964 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 20:10:10,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:10,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487669223] [2022-12-13 20:10:10,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487669223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:10,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:10:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634970831] [2022-12-13 20:10:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:10,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:10,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 310 [2022-12-13 20:10:10,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 20:10:10,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:10,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 310 [2022-12-13 20:10:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:13,787 INFO L130 PetriNetUnfolder]: 30352/46477 cut-off events. [2022-12-13 20:10:13,788 INFO L131 PetriNetUnfolder]: For 1453/1453 co-relation queries the response was YES. [2022-12-13 20:10:13,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90754 conditions, 46477 events. 30352/46477 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 345651 event pairs, 11453 based on Foata normal form. 10724/53580 useless extension candidates. Maximal degree in co-relation 50450. Up to 31255 conditions per place. [2022-12-13 20:10:13,928 INFO L137 encePairwiseOnDemand]: 281/310 looper letters, 44 selfloop transitions, 4 changer transitions 33/92 dead transitions. [2022-12-13 20:10:13,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 393 flow [2022-12-13 20:10:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 20:10:13,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5870967741935483 [2022-12-13 20:10:13,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 20:10:13,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 20:10:13,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 20:10:13,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 20:10:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 20:10:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 20:10:13,935 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 178 flow. Second operand 3 states and 546 transitions. [2022-12-13 20:10:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 393 flow [2022-12-13 20:10:13,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:13,939 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 141 flow [2022-12-13 20:10:13,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2022-12-13 20:10:13,939 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2022-12-13 20:10:13,939 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 141 flow [2022-12-13 20:10:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 20:10:13,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:13,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:10:13,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2057001827, now seen corresponding path program 1 times [2022-12-13 20:10:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337247627] [2022-12-13 20:10:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:13,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337247627] [2022-12-13 20:10:13,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337247627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:13,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345602107] [2022-12-13 20:10:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:13,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:13,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:13,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:14,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:10:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:14,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:10:14,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:14,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:10:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:14,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345602107] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:10:14,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:10:14,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 20:10:14,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434062] [2022-12-13 20:10:14,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:10:14,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:10:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:10:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:10:14,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 310 [2022-12-13 20:10:14,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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 20:10:14,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:14,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 310 [2022-12-13 20:10:14,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:14,944 INFO L130 PetriNetUnfolder]: 5560/9099 cut-off events. [2022-12-13 20:10:14,944 INFO L131 PetriNetUnfolder]: For 3850/3850 co-relation queries the response was YES. [2022-12-13 20:10:14,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21340 conditions, 9099 events. 5560/9099 cut-off events. For 3850/3850 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 60768 event pairs, 64 based on Foata normal form. 0/9097 useless extension candidates. Maximal degree in co-relation 10718. Up to 5346 conditions per place. [2022-12-13 20:10:14,979 INFO L137 encePairwiseOnDemand]: 307/310 looper letters, 87 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-12-13 20:10:14,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 102 transitions, 471 flow [2022-12-13 20:10:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:10:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:10:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 951 transitions. [2022-12-13 20:10:14,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-12-13 20:10:14,981 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 951 transitions. [2022-12-13 20:10:14,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 951 transitions. [2022-12-13 20:10:14,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:14,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 951 transitions. [2022-12-13 20:10:14,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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 20:10:14,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 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 20:10:14,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 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 20:10:14,986 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 141 flow. Second operand 6 states and 951 transitions. [2022-12-13 20:10:14,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 102 transitions, 471 flow [2022-12-13 20:10:14,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 102 transitions, 455 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 20:10:14,993 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 135 flow [2022-12-13 20:10:14,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2022-12-13 20:10:14,994 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2022-12-13 20:10:14,994 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 135 flow [2022-12-13 20:10:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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 20:10:14,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:14,995 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:10:15,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:10:15,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:10:15,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1169705779, now seen corresponding path program 1 times [2022-12-13 20:10:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:15,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619304314] [2022-12-13 20:10:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:15,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:10:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:10:15,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:10:15,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:10:15,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-12-13 20:10:15,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 20:10:15,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:10:15,228 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:10:15,228 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:10:15,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 20:10:15,248 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:10:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,318 INFO L130 PetriNetUnfolder]: 82/562 cut-off events. [2022-12-13 20:10:15,319 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:10:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 562 events. 82/562 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2085 event pairs, 6 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 390. Up to 32 conditions per place. [2022-12-13 20:10:15,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:15,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 209 transitions, 462 flow [2022-12-13 20:10:15,390 INFO L130 PetriNetUnfolder]: 82/562 cut-off events. [2022-12-13 20:10:15,390 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:10:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 562 events. 82/562 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2085 event pairs, 6 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 390. Up to 32 conditions per place. [2022-12-13 20:10:15,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 20720 [2022-12-13 20:10:19,025 INFO L134 LiptonReduction]: Checked pairs total: 62901 [2022-12-13 20:10:19,026 INFO L136 LiptonReduction]: Total number of compositions: 150 [2022-12-13 20:10:19,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:19,028 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;@616ebd53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:19,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:10:19,030 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 20:10:19,030 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:10:19,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:19,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:10:19,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 45655822, now seen corresponding path program 1 times [2022-12-13 20:10:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679428139] [2022-12-13 20:10:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:19,090 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 20:10:19,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679428139] [2022-12-13 20:10:19,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679428139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:19,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:19,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:10:19,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556687606] [2022-12-13 20:10:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:10:19,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 359 [2022-12-13 20:10:19,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 20:10:19,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:19,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 359 [2022-12-13 20:10:19,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:53,290 INFO L130 PetriNetUnfolder]: 399814/556326 cut-off events. [2022-12-13 20:10:53,290 INFO L131 PetriNetUnfolder]: For 21066/21066 co-relation queries the response was YES. [2022-12-13 20:10:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093692 conditions, 556326 events. 399814/556326 cut-off events. For 21066/21066 co-relation queries the response was YES. Maximal size of possible extension queue 11224. Compared 4507789 event pairs, 169264 based on Foata normal form. 103173/624526 useless extension candidates. Maximal degree in co-relation 475375. Up to 383538 conditions per place. [2022-12-13 20:10:54,740 INFO L137 encePairwiseOnDemand]: 322/359 looper letters, 56 selfloop transitions, 5 changer transitions 40/115 dead transitions. [2022-12-13 20:10:54,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 505 flow [2022-12-13 20:10:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2022-12-13 20:10:54,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5923862581244197 [2022-12-13 20:10:54,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2022-12-13 20:10:54,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2022-12-13 20:10:54,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:54,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2022-12-13 20:10:54,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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 20:10:54,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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 20:10:54,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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 20:10:54,746 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 230 flow. Second operand 3 states and 638 transitions. [2022-12-13 20:10:54,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 505 flow [2022-12-13 20:10:54,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:54,806 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 185 flow [2022-12-13 20:10:54,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2022-12-13 20:10:54,807 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2022-12-13 20:10:54,807 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 185 flow [2022-12-13 20:10:54,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 20:10:54,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:54,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:10:54,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:10:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 658730720, now seen corresponding path program 1 times [2022-12-13 20:10:54,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139242984] [2022-12-13 20:10:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:54,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:54,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139242984] [2022-12-13 20:10:54,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139242984] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:54,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263647278] [2022-12-13 20:10:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:54,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:54,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:54,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:54,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:10:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:10:54,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:55,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:10:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:10:55,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263647278] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:10:55,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:10:55,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 20:10:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626422355] [2022-12-13 20:10:55,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:10:55,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:10:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:10:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:10:55,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 359 [2022-12-13 20:10:55,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 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 20:10:55,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:55,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 359 [2022-12-13 20:10:55,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:02,236 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [116#$Ultimate##0true, t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 187#true, 129#L702-16true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:02,237 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2022-12-13 20:11:02,237 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 20:11:02,237 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 20:11:02,237 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 20:11:02,721 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 129#L702-16true, 187#true, 109#L702-17true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:02,721 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,721 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,721 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,721 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,727 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [116#$Ultimate##0true, t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 138#t_funEXITtrue, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:02,727 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,727 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,727 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:02,727 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 20:11:03,341 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, 143#L710-12true, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 129#L702-16true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:03,341 INFO L383 tUnfolder$Statistics]: this new event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,341 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,341 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,341 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,343 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 138#t_funEXITtrue, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 187#true, 109#L702-17true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:03,343 INFO L383 tUnfolder$Statistics]: this new event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,343 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,343 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:03,343 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 20:11:04,130 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, 49#L712-7true, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 129#L702-16true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,130 INFO L383 tUnfolder$Statistics]: this new event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,130 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,131 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,131 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,132 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, 143#L710-12true, t_funThread3of4ForFork0InUse, 138#t_funEXITtrue, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,132 INFO L383 tUnfolder$Statistics]: this new event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,132 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,132 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,133 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 20:11:04,521 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 129#L702-16true, 187#true, 87#L712-2true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,522 INFO L383 tUnfolder$Statistics]: this new event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [120#L702-3true, t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 129#L702-16true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,522 INFO L383 tUnfolder$Statistics]: this new event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,522 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,523 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, 49#L712-7true, t_funThread3of4ForFork0InUse, 35#L702-12true, 138#t_funEXITtrue, t_funThread4of4ForFork0InUse, 192#true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,523 INFO L383 tUnfolder$Statistics]: this new event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,523 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,523 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,524 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1370] L702-3-->L702-5: Formula: (= v_~global~0_124 (+ |v_t_funThread4of4ForFork0_#t~post5_12| 1)) InVars {t_funThread4of4ForFork0_#t~post5=|v_t_funThread4of4ForFork0_#t~post5_12|} OutVars{~global~0=v_~global~0_124} AuxVars[] AssignedVars[t_funThread4of4ForFork0_#t~post5, ~global~0][135], [42#L702-5true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, 138#t_funEXITtrue, 192#true, t_funThread4of4ForFork0InUse, 187#true, 87#L712-2true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,884 INFO L383 tUnfolder$Statistics]: this new event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [120#L702-3true, t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, 138#t_funEXITtrue, t_funThread4of4ForFork0InUse, 192#true, 187#true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:04,884 INFO L383 tUnfolder$Statistics]: this new event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:04,884 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:05,018 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1378] L702-11-->L702-13: Formula: (= |v_t_funThread4of4ForFork0_#t~post7_12| (+ v_~global~0_128 1)) InVars {t_funThread4of4ForFork0_#t~post7=|v_t_funThread4of4ForFork0_#t~post7_12|} OutVars{~global~0=v_~global~0_128} AuxVars[] AssignedVars[~global~0, t_funThread4of4ForFork0_#t~post7][136], [51#L702-12true, t_funThread1of4ForFork0InUse, 18#L702-4true, 143#L710-12true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, 192#true, t_funThread4of4ForFork0InUse, 187#true, 81#L702-13true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:05,018 INFO L383 tUnfolder$Statistics]: this new event has 49 ancestors and is cut-off event [2022-12-13 20:11:05,018 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:05,018 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:05,019 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 20:11:05,327 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1378] L702-11-->L702-13: Formula: (= |v_t_funThread4of4ForFork0_#t~post7_12| (+ v_~global~0_128 1)) InVars {t_funThread4of4ForFork0_#t~post7=|v_t_funThread4of4ForFork0_#t~post7_12|} OutVars{~global~0=v_~global~0_128} AuxVars[] AssignedVars[~global~0, t_funThread4of4ForFork0_#t~post7][136], [51#L702-12true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, 49#L712-7true, t_funThread3of4ForFork0InUse, 35#L702-12true, 192#true, t_funThread4of4ForFork0InUse, 187#true, 81#L702-13true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:05,327 INFO L383 tUnfolder$Statistics]: this new event has 50 ancestors and is cut-off event [2022-12-13 20:11:05,327 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 20:11:05,327 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 20:11:05,327 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 20:11:05,596 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1440] L712-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| (ite (= v_~global~0_140 0) 1 0)) (= |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|)) InVars {~global~0=v_~global~0_140} OutVars{ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_80|, ~global~0=v_~global~0_140, ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_102|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_#in~cond#1, ULTIMATE.start___VERIFIER_assert_~cond#1][122], [51#L702-12true, t_funThread1of4ForFork0InUse, 18#L702-4true, 156#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, t_funThread4of4ForFork0InUse, 192#true, 187#true, 163#L702-11true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:05,596 INFO L383 tUnfolder$Statistics]: this new event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1378] L702-11-->L702-13: Formula: (= |v_t_funThread4of4ForFork0_#t~post7_12| (+ v_~global~0_128 1)) InVars {t_funThread4of4ForFork0_#t~post7=|v_t_funThread4of4ForFork0_#t~post7_12|} OutVars{~global~0=v_~global~0_128} AuxVars[] AssignedVars[~global~0, t_funThread4of4ForFork0_#t~post7][136], [51#L702-12true, t_funThread1of4ForFork0InUse, 18#L702-4true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0InUse, 35#L702-12true, 192#true, t_funThread4of4ForFork0InUse, 187#true, 87#L712-2true, 81#L702-13true, Black: 189#(= ~global~0 0)]) [2022-12-13 20:11:05,597 INFO L383 tUnfolder$Statistics]: this new event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:05,597 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 20:11:06,694 INFO L130 PetriNetUnfolder]: 128321/176569 cut-off events. [2022-12-13 20:11:06,694 INFO L131 PetriNetUnfolder]: For 29905/29953 co-relation queries the response was YES. [2022-12-13 20:11:06,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386102 conditions, 176569 events. 128321/176569 cut-off events. For 29905/29953 co-relation queries the response was YES. Maximal size of possible extension queue 4782. Compared 1286769 event pairs, 19823 based on Foata normal form. 2/164360 useless extension candidates. Maximal degree in co-relation 242024. Up to 108628 conditions per place. [2022-12-13 20:11:07,441 INFO L137 encePairwiseOnDemand]: 355/359 looper letters, 120 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2022-12-13 20:11:07,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 144 transitions, 646 flow [2022-12-13 20:11:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:11:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:11:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1117 transitions. [2022-12-13 20:11:07,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5185701021355618 [2022-12-13 20:11:07,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1117 transitions. [2022-12-13 20:11:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1117 transitions. [2022-12-13 20:11:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1117 transitions. [2022-12-13 20:11:07,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 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 20:11:07,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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 20:11:07,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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 20:11:07,449 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 185 flow. Second operand 6 states and 1117 transitions. [2022-12-13 20:11:07,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 144 transitions, 646 flow [2022-12-13 20:11:07,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 144 transitions, 622 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:11:07,459 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 210 flow [2022-12-13 20:11:07,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2022-12-13 20:11:07,460 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2022-12-13 20:11:07,460 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 210 flow [2022-12-13 20:11:07,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 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 20:11:07,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:07,460 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:07,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 20:11:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060c4717-b82b-4a59-84db-40b892ab2ef8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:07,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:11:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1558550625, now seen corresponding path program 1 times [2022-12-13 20:11:07,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:07,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065477271] [2022-12-13 20:11:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:11:07,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:11:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:11:07,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:11:07,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:11:07,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-12-13 20:11:07,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 20:11:07,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:11:07,726 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:11:07,727 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:11:07,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 20:11:07,745 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 20:11:07,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,849 INFO L130 PetriNetUnfolder]: 141/894 cut-off events. [2022-12-13 20:11:07,849 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 20:11:07,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 894 events. 141/894 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3980 event pairs, 23 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 607. Up to 80 conditions per place. [2022-12-13 20:11:07,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:11:07,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,858 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 239 transitions, 538 flow [2022-12-13 20:11:07,941 INFO L130 PetriNetUnfolder]: 141/894 cut-off events. [2022-12-13 20:11:07,941 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 20:11:07,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 894 events. 141/894 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3980 event pairs, 23 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 607. Up to 80 conditions per place. [2022-12-13 20:11:07,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 30240 [2022-12-13 20:11:10,747 INFO L134 LiptonReduction]: Checked pairs total: 95374 [2022-12-13 20:11:10,748 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-12-13 20:11:10,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:11:10,750 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;@616ebd53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:11:10,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:11:10,751 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 20:11:10,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:11:10,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:10,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:11:10,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 20:11:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash 58862347, now seen corresponding path program 1 times [2022-12-13 20:11:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:10,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267756104] [2022-12-13 20:11:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:10,778 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 20:11:10,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267756104] [2022-12-13 20:11:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267756104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:11:10,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:11:10,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:11:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355637469] [2022-12-13 20:11:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:11:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:11:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:11:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:11:10,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 399 [2022-12-13 20:11:10,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 112 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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 20:11:10,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:10,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 399 [2022-12-13 20:11:10,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand