./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix039.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix039.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ --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 4df22382a468f75ea1bc6624bacd8789c0b9b9f8aa1bc2866cf2715dcbc507bc --- 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-dbf71c6-m [2022-10-17 10:32:42,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:32:42,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:32:42,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:32:42,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:32:42,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:32:42,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:32:42,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:32:42,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:32:42,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:32:42,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:32:42,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:32:42,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:32:42,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:32:42,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:32:42,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:32:42,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:32:42,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:32:42,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:32:42,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:32:42,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:32:42,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:32:42,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:32:42,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:32:42,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:32:42,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:32:42,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:32:42,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:32:42,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:32:42,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:32:42,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:32:42,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:32:42,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:32:42,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:32:42,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:32:42,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:32:42,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:32:42,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:32:42,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:32:42,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:32:42,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:32:42,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:32:42,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:32:42,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:32:42,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:32:42,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:32:42,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:32:42,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:32:42,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:32:42,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:32:42,514 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:32:42,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:32:42,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:32:42,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:32:42,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:32:42,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:32:42,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:32:42,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:32:42,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:32:42,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:32:42,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:32:42,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:32:42,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:32:42,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:32:42,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:32:42,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:32:42,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:32:42,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:32:42,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:32:42,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:32:42,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:32:42,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:32:42,519 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:32:42,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:32:42,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:32:42,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4df22382a468f75ea1bc6624bacd8789c0b9b9f8aa1bc2866cf2715dcbc507bc [2022-10-17 10:32:42,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:32:42,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:32:42,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:32:42,906 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:32:42,906 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:32:42,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix039.opt.i [2022-10-17 10:32:42,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/data/3d36ef8b6/80cb9323286947b88964bae4106eac44/FLAGbf3a771c7 [2022-10-17 10:32:43,656 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:32:43,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/sv-benchmarks/c/pthread-wmm/mix039.opt.i [2022-10-17 10:32:43,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/data/3d36ef8b6/80cb9323286947b88964bae4106eac44/FLAGbf3a771c7 [2022-10-17 10:32:43,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/data/3d36ef8b6/80cb9323286947b88964bae4106eac44 [2022-10-17 10:32:43,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:32:43,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:32:43,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:32:43,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:32:43,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:32:43,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:32:43" (1/1) ... [2022-10-17 10:32:43,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de0e76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:43, skipping insertion in model container [2022-10-17 10:32:43,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:32:43" (1/1) ... [2022-10-17 10:32:43,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:32:44,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:32:44,205 WARN L230 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_32320a3b-6b5a-4a19-929c-7f010c04ca23/sv-benchmarks/c/pthread-wmm/mix039.opt.i[944,957] [2022-10-17 10:32:44,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:44,542 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:32:44,556 WARN L230 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_32320a3b-6b5a-4a19-929c-7f010c04ca23/sv-benchmarks/c/pthread-wmm/mix039.opt.i[944,957] [2022-10-17 10:32:44,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:44,693 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:32:44,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44 WrapperNode [2022-10-17 10:32:44,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:32:44,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:44,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:32:44,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:32:44,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,764 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 200 [2022-10-17 10:32:44,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:44,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:32:44,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:32:44,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:32:44,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:32:44,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:32:44,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:32:44,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:32:44,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (1/1) ... [2022-10-17 10:32:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:32:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:44,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:32:44,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32320a3b-6b5a-4a19-929c-7f010c04ca23/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:32:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:32:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:32:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:32:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:32:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:32:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:32:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:32:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:32:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:32:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:32:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:32:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:32:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:32:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:32:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:32:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:32:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:32:44,930 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:32:45,133 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:32:45,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:32:45,815 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:32:46,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:32:46,289 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:32:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:46 BoogieIcfgContainer [2022-10-17 10:32:46,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:32:46,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:32:46,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:32:46,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:32:46,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:32:43" (1/3) ... [2022-10-17 10:32:46,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669a6671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:46, skipping insertion in model container [2022-10-17 10:32:46,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:44" (2/3) ... [2022-10-17 10:32:46,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669a6671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:46, skipping insertion in model container [2022-10-17 10:32:46,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:46" (3/3) ... [2022-10-17 10:32:46,305 INFO L112 eAbstractionObserver]: Analyzing ICFG mix039.opt.i [2022-10-17 10:32:46,315 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:32:46,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:32:46,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:32:46,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:32:46,420 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:32:46,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:32:46,567 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-10-17 10:32:46,567 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:32:46,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-10-17 10:32:46,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:32:46,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-10-17 10:32:46,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:32:46,618 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;@57a2420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:32:46,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:32:46,641 INFO L130 PetriNetUnfolder]: 0/91 cut-off events. [2022-10-17 10:32:46,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:32:46,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:32:46,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:46,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:32:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash 201243862, now seen corresponding path program 1 times [2022-10-17 10:32:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:46,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748435239] [2022-10-17 10:32:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:47,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748435239] [2022-10-17 10:32:47,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748435239] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:47,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:47,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:32:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858551050] [2022-10-17 10:32:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:47,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:47,476 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 137 [2022-10-17 10:32:47,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-10-17 10:32:47,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:32:47,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 137 [2022-10-17 10:32:47,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:32:47,597 INFO L130 PetriNetUnfolder]: 10/207 cut-off events. [2022-10-17 10:32:47,598 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:32:47,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 207 events. 10/207 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 4 based on Foata normal form. 6/204 useless extension candidates. Maximal degree in co-relation 191. Up to 17 conditions per place. [2022-10-17 10:32:47,602 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 9 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-10-17 10:32:47,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 131 transitions, 296 flow [2022-10-17 10:32:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:32:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-10-17 10:32:47,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-10-17 10:32:47,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-10-17 10:32:47,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-10-17 10:32:47,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:32:47,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-10-17 10:32:47,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2022-10-17 10:32:47,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-10-17 10:32:47,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-10-17 10:32:47,641 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-10-17 10:32:47,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 131 transitions, 296 flow [2022-10-17 10:32:47,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 292 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:32:47,651 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-10-17 10:32:47,653 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-10-17 10:32:47,657 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-10-17 10:32:47,658 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-10-17 10:32:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-10-17 10:32:47,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:32:47,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:32:47,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:32:47,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1834671337, now seen corresponding path program 1 times [2022-10-17 10:32:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:47,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246357786] [2022-10-17 10:32:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246357786] [2022-10-17 10:32:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246357786] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:48,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:48,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:32:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420517017] [2022-10-17 10:32:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:32:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:32:48,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:32:48,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 137 [2022-10-17 10:32:48,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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) [2022-10-17 10:32:48,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:32:48,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 137 [2022-10-17 10:32:48,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:32:50,218 INFO L130 PetriNetUnfolder]: 1863/4763 cut-off events. [2022-10-17 10:32:50,218 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-10-17 10:32:50,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7646 conditions, 4763 events. 1863/4763 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41183 event pairs, 250 based on Foata normal form. 0/4655 useless extension candidates. Maximal degree in co-relation 7584. Up to 1023 conditions per place. [2022-10-17 10:32:50,266 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 32 selfloop transitions, 7 changer transitions 80/210 dead transitions. [2022-10-17 10:32:50,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 210 transitions, 650 flow [2022-10-17 10:32:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:32:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:32:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1513 transitions. [2022-10-17 10:32:50,275 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8495227400336889 [2022-10-17 10:32:50,275 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1513 transitions. [2022-10-17 10:32:50,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1513 transitions. [2022-10-17 10:32:50,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:32:50,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1513 transitions. [2022-10-17 10:32:50,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.38461538461539) internal successors, (1513), 13 states have internal predecessors, (1513), 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) [2022-10-17 10:32:50,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:32:50,294 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:32:50,294 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1513 transitions. [2022-10-17 10:32:50,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 210 transitions, 650 flow [2022-10-17 10:32:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 210 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:32:50,304 INFO L231 Difference]: Finished difference. Result has 162 places, 120 transitions, 338 flow [2022-10-17 10:32:50,304 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=338, PETRI_PLACES=162, PETRI_TRANSITIONS=120} [2022-10-17 10:32:50,305 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-10-17 10:32:50,306 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 120 transitions, 338 flow [2022-10-17 10:32:50,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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) [2022-10-17 10:32:50,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:32:50,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:32:50,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:32:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1059977300, now seen corresponding path program 1 times [2022-10-17 10:32:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:50,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034478363] [2022-10-17 10:32:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:50,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034478363] [2022-10-17 10:32:50,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034478363] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:50,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:50,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:32:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793816814] [2022-10-17 10:32:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:50,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:32:50,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:32:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:32:50,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 137 [2022-10-17 10:32:50,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 120 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-10-17 10:32:50,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:32:50,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 137 [2022-10-17 10:32:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:32:52,081 INFO L130 PetriNetUnfolder]: 1167/2630 cut-off events. [2022-10-17 10:32:52,081 INFO L131 PetriNetUnfolder]: For 6153/6153 co-relation queries the response was YES. [2022-10-17 10:32:52,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 2630 events. 1167/2630 cut-off events. For 6153/6153 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18723 event pairs, 162 based on Foata normal form. 53/2607 useless extension candidates. Maximal degree in co-relation 8701. Up to 904 conditions per place. [2022-10-17 10:32:52,118 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 37 selfloop transitions, 16 changer transitions 58/202 dead transitions. [2022-10-17 10:32:52,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 202 transitions, 1098 flow [2022-10-17 10:32:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:32:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:32:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1513 transitions. [2022-10-17 10:32:52,125 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8495227400336889 [2022-10-17 10:32:52,126 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1513 transitions. [2022-10-17 10:32:52,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1513 transitions. [2022-10-17 10:32:52,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:32:52,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1513 transitions. [2022-10-17 10:32:52,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.38461538461539) internal successors, (1513), 13 states have internal predecessors, (1513), 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) [2022-10-17 10:32:52,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:32:52,140 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:32:52,141 INFO L175 Difference]: Start difference. First operand has 162 places, 120 transitions, 338 flow. Second operand 13 states and 1513 transitions. [2022-10-17 10:32:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 202 transitions, 1098 flow [2022-10-17 10:32:52,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 202 transitions, 1046 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-10-17 10:32:52,178 INFO L231 Difference]: Finished difference. Result has 158 places, 127 transitions, 463 flow [2022-10-17 10:32:52,179 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=463, PETRI_PLACES=158, PETRI_TRANSITIONS=127} [2022-10-17 10:32:52,181 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 14 predicate places. [2022-10-17 10:32:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 127 transitions, 463 flow [2022-10-17 10:32:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-10-17 10:32:52,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:32:52,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:52,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:32:52,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:32:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 726765571, now seen corresponding path program 1 times [2022-10-17 10:32:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:52,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260990832] [2022-10-17 10:32:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:52,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:52,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260990832] [2022-10-17 10:32:52,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260990832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:52,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:52,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:32:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187209490] [2022-10-17 10:32:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:52,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:32:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:32:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:32:52,596 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-10-17 10:32:52,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 127 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 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) [2022-10-17 10:32:52,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:32:52,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-10-17 10:32:52,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:32:56,891 INFO L130 PetriNetUnfolder]: 6218/11316 cut-off events. [2022-10-17 10:32:56,891 INFO L131 PetriNetUnfolder]: For 22835/38012 co-relation queries the response was YES. [2022-10-17 10:32:57,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30000 conditions, 11316 events. 6218/11316 cut-off events. For 22835/38012 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 96354 event pairs, 576 based on Foata normal form. 145/10508 useless extension candidates. Maximal degree in co-relation 29918. Up to 3757 conditions per place. [2022-10-17 10:32:57,092 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 69 selfloop transitions, 20 changer transitions 8/202 dead transitions. [2022-10-17 10:32:57,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 202 transitions, 1009 flow [2022-10-17 10:32:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:32:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:32:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1213 transitions. [2022-10-17 10:32:57,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8854014598540146 [2022-10-17 10:32:57,100 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1213 transitions. [2022-10-17 10:32:57,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1213 transitions. [2022-10-17 10:32:57,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:32:57,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1213 transitions. [2022-10-17 10:32:57,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 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) [2022-10-17 10:32:57,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-10-17 10:32:57,119 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-10-17 10:32:57,119 INFO L175 Difference]: Start difference. First operand has 158 places, 127 transitions, 463 flow. Second operand 10 states and 1213 transitions. [2022-10-17 10:32:57,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 202 transitions, 1009 flow [2022-10-17 10:32:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 202 transitions, 979 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-10-17 10:32:57,227 INFO L231 Difference]: Finished difference. Result has 152 places, 145 transitions, 576 flow [2022-10-17 10:32:57,228 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=576, PETRI_PLACES=152, PETRI_TRANSITIONS=145} [2022-10-17 10:32:57,230 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 8 predicate places. [2022-10-17 10:32:57,230 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 145 transitions, 576 flow [2022-10-17 10:32:57,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 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) [2022-10-17 10:32:57,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:32:57,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:57,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:32:57,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:32:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -267365294, now seen corresponding path program 1 times [2022-10-17 10:32:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:57,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006345980] [2022-10-17 10:32:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:32:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006345980] [2022-10-17 10:32:57,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006345980] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:32:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604391611] [2022-10-17 10:32:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:32:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:32:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:32:57,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 137 [2022-10-17 10:32:57,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 145 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 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) [2022-10-17 10:32:57,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:32:57,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 137 [2022-10-17 10:32:57,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:32:59,882 INFO L130 PetriNetUnfolder]: 2214/6612 cut-off events. [2022-10-17 10:32:59,882 INFO L131 PetriNetUnfolder]: For 13229/15056 co-relation queries the response was YES. [2022-10-17 10:32:59,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20337 conditions, 6612 events. 2214/6612 cut-off events. For 13229/15056 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 68845 event pairs, 701 based on Foata normal form. 127/6240 useless extension candidates. Maximal degree in co-relation 20254. Up to 1518 conditions per place. [2022-10-17 10:33:00,003 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 69 selfloop transitions, 22 changer transitions 0/200 dead transitions. [2022-10-17 10:33:00,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 200 transitions, 1161 flow [2022-10-17 10:33:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:33:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:33:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1162 transitions. [2022-10-17 10:33:00,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8481751824817518 [2022-10-17 10:33:00,008 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1162 transitions. [2022-10-17 10:33:00,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1162 transitions. [2022-10-17 10:33:00,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:33:00,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1162 transitions. [2022-10-17 10:33:00,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.2) internal successors, (1162), 10 states have internal predecessors, (1162), 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) [2022-10-17 10:33:00,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-10-17 10:33:00,020 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-10-17 10:33:00,020 INFO L175 Difference]: Start difference. First operand has 152 places, 145 transitions, 576 flow. Second operand 10 states and 1162 transitions. [2022-10-17 10:33:00,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 200 transitions, 1161 flow [2022-10-17 10:33:00,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 200 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:33:00,052 INFO L231 Difference]: Finished difference. Result has 168 places, 157 transitions, 769 flow [2022-10-17 10:33:00,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=769, PETRI_PLACES=168, PETRI_TRANSITIONS=157} [2022-10-17 10:33:00,056 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 24 predicate places. [2022-10-17 10:33:00,056 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 157 transitions, 769 flow [2022-10-17 10:33:00,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 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) [2022-10-17 10:33:00,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:33:00,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:33:00,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:33:00,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:33:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash 521624756, now seen corresponding path program 1 times [2022-10-17 10:33:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:33:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995277174] [2022-10-17 10:33:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:33:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:00,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:33:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995277174] [2022-10-17 10:33:00,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995277174] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:00,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:00,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:33:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797210589] [2022-10-17 10:33:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:33:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:33:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:33:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:33:00,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-10-17 10:33:00,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 157 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 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) [2022-10-17 10:33:00,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:33:00,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-10-17 10:33:00,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:33:04,840 INFO L130 PetriNetUnfolder]: 7944/15388 cut-off events. [2022-10-17 10:33:04,841 INFO L131 PetriNetUnfolder]: For 49497/63923 co-relation queries the response was YES. [2022-10-17 10:33:04,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55719 conditions, 15388 events. 7944/15388 cut-off events. For 49497/63923 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 145858 event pairs, 200 based on Foata normal form. 657/15341 useless extension candidates. Maximal degree in co-relation 55628. Up to 4719 conditions per place. [2022-10-17 10:33:05,013 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 99 selfloop transitions, 38 changer transitions 0/254 dead transitions. [2022-10-17 10:33:05,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 254 transitions, 1723 flow [2022-10-17 10:33:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:33:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:33:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1580 transitions. [2022-10-17 10:33:05,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8871420550252667 [2022-10-17 10:33:05,021 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1580 transitions. [2022-10-17 10:33:05,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1580 transitions. [2022-10-17 10:33:05,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:33:05,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1580 transitions. [2022-10-17 10:33:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.53846153846153) internal successors, (1580), 13 states have internal predecessors, (1580), 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) [2022-10-17 10:33:05,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:33:05,036 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-10-17 10:33:05,036 INFO L175 Difference]: Start difference. First operand has 168 places, 157 transitions, 769 flow. Second operand 13 states and 1580 transitions. [2022-10-17 10:33:05,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 254 transitions, 1723 flow [2022-10-17 10:33:05,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 254 transitions, 1697 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-10-17 10:33:05,326 INFO L231 Difference]: Finished difference. Result has 186 places, 177 transitions, 1036 flow [2022-10-17 10:33:05,327 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1036, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2022-10-17 10:33:05,330 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-10-17 10:33:05,330 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 1036 flow [2022-10-17 10:33:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 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) [2022-10-17 10:33:05,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:33:05,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:33:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:33:05,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:33:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1732320210, now seen corresponding path program 1 times [2022-10-17 10:33:05,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:33:05,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260720485] [2022-10-17 10:33:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:05,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:33:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:33:05,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260720485] [2022-10-17 10:33:05,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260720485] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:05,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:05,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:33:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101594161] [2022-10-17 10:33:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:33:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:33:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:33:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:33:05,799 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-10-17 10:33:05,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 1036 flow. Second operand has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 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) [2022-10-17 10:33:05,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:33:05,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-10-17 10:33:05,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:33:10,017 INFO L130 PetriNetUnfolder]: 7465/14790 cut-off events. [2022-10-17 10:33:10,017 INFO L131 PetriNetUnfolder]: For 82424/96504 co-relation queries the response was YES. [2022-10-17 10:33:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66302 conditions, 14790 events. 7465/14790 cut-off events. For 82424/96504 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 144019 event pairs, 132 based on Foata normal form. 828/14961 useless extension candidates. Maximal degree in co-relation 66202. Up to 4456 conditions per place. [2022-10-17 10:33:10,250 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 93 selfloop transitions, 58 changer transitions 31/291 dead transitions. [2022-10-17 10:33:10,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 291 transitions, 2343 flow [2022-10-17 10:33:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:33:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:33:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1946 transitions. [2022-10-17 10:33:10,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8877737226277372 [2022-10-17 10:33:10,261 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1946 transitions. [2022-10-17 10:33:10,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1946 transitions. [2022-10-17 10:33:10,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:33:10,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1946 transitions. [2022-10-17 10:33:10,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.625) internal successors, (1946), 16 states have internal predecessors, (1946), 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) [2022-10-17 10:33:10,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-10-17 10:33:10,278 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-10-17 10:33:10,278 INFO L175 Difference]: Start difference. First operand has 186 places, 177 transitions, 1036 flow. Second operand 16 states and 1946 transitions. [2022-10-17 10:33:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 291 transitions, 2343 flow [2022-10-17 10:33:12,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 291 transitions, 2232 flow, removed 43 selfloop flow, removed 5 redundant places. [2022-10-17 10:33:12,611 INFO L231 Difference]: Finished difference. Result has 200 places, 195 transitions, 1310 flow [2022-10-17 10:33:12,611 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1310, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-10-17 10:33:12,612 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-10-17 10:33:12,612 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 1310 flow [2022-10-17 10:33:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 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) [2022-10-17 10:33:12,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:33:12,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:33:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:33:12,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:33:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1571303908, now seen corresponding path program 1 times [2022-10-17 10:33:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:33:12,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405150049] [2022-10-17 10:33:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:33:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:33:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:33:13,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405150049] [2022-10-17 10:33:13,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405150049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:13,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:13,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:33:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039785142] [2022-10-17 10:33:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:13,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:33:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:33:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:33:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:33:13,093 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 137 [2022-10-17 10:33:13,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 1310 flow. Second operand has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 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) [2022-10-17 10:33:13,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:33:13,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 137 [2022-10-17 10:33:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand