./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF --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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:59,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:59,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:59,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:59,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:59,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:59,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:59,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:59,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:59,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:59,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:59,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:59,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:59,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:59,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:59,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:59,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:59,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:59,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:59,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:59,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:59,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:59,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:59,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:59,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:59,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:59,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:59,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:59,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:59,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:59,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:59,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:59,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:59,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:59,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:59,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:59,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:59,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:59,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:59,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:59,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:59,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:51:59,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:59,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:59,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:59,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:59,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:59,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:59,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:59,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:59,705 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:59,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:59,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:59,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:59,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:59,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:59,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:51:59,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:59,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:51:59,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:59,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:51:59,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:59,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:51:59,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:59,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:59,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:59,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:59,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:59,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:59,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:51:59,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:59,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:59,711 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:51:59,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:51:59,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:51:59,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:59,711 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_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2021-11-20 05:51:59,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:00,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:00,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:00,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:00,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:00,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-20 05:52:00,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/data/51d351fb0/0f3937885fb94817afbf552b3c2d2113/FLAG4f0fa1e07 [2021-11-20 05:52:00,544 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:00,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-20 05:52:00,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/data/51d351fb0/0f3937885fb94817afbf552b3c2d2113/FLAG4f0fa1e07 [2021-11-20 05:52:00,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/data/51d351fb0/0f3937885fb94817afbf552b3c2d2113 [2021-11-20 05:52:00,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:00,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:00,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:00,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:00,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:00,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:00" (1/1) ... [2021-11-20 05:52:00,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2066e987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:00, skipping insertion in model container [2021-11-20 05:52:00,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:00" (1/1) ... [2021-11-20 05:52:00,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:00,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:01,205 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_0f520e6f-e946-4583-ab48-ff8773bd9e94/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-20 05:52:01,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:01,224 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:01,254 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_0f520e6f-e946-4583-ab48-ff8773bd9e94/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-20 05:52:01,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:01,273 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:01,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01 WrapperNode [2021-11-20 05:52:01,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:01,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:01,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:01,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:01,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,335 INFO L137 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 303 [2021-11-20 05:52:01,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:01,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:01,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:01,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:01,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:01,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:01,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:01,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:01,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (1/1) ... [2021-11-20 05:52:01,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:01,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f520e6f-e946-4583-ab48-ff8773bd9e94/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:52:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:52:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:52:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 05:52:01,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 05:52:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 05:52:01,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 05:52:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 05:52:01,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 05:52:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-20 05:52:01,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-20 05:52:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:52:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:52:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:52:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:52:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:52:01,498 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 05:52:01,595 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:01,597 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:02,137 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:02,473 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:02,474 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 05:52:02,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:02 BoogieIcfgContainer [2021-11-20 05:52:02,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:02,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:02,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:02,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:02,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:00" (1/3) ... [2021-11-20 05:52:02,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16291a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:02, skipping insertion in model container [2021-11-20 05:52:02,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:01" (2/3) ... [2021-11-20 05:52:02,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16291a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:02, skipping insertion in model container [2021-11-20 05:52:02,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:02" (3/3) ... [2021-11-20 05:52:02,498 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2021-11-20 05:52:02,505 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:52:02,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:02,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:52:02,506 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:52:02,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,567 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,570 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,570 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,570 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,571 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,571 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,571 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,571 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,577 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,577 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,578 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,578 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,578 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,578 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,578 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,581 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,582 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,582 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,582 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,582 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,582 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,583 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,583 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,583 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,583 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,583 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,588 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,588 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,589 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,589 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,589 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,589 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,590 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,591 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,613 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:52:02,618 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-20 05:52:02,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:02,682 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:52:02,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-20 05:52:02,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 229 transitions, 490 flow [2021-11-20 05:52:02,845 INFO L129 PetriNetUnfolder]: 18/225 cut-off events. [2021-11-20 05:52:02,846 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 05:52:02,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 225 events. 18/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 113 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2021-11-20 05:52:02,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 229 transitions, 490 flow [2021-11-20 05:52:02,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 212 transitions, 448 flow [2021-11-20 05:52:02,913 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2021-11-20 05:52:02,913 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-20 05:52:02,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:02,915 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:02,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 238758714, now seen corresponding path program 1 times [2021-11-20 05:52:02,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:02,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612762725] [2021-11-20 05:52:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:02,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:03,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:03,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612762725] [2021-11-20 05:52:03,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612762725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:03,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:03,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:52:03,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583928913] [2021-11-20 05:52:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:03,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:52:03,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:52:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:52:03,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 229 [2021-11-20 05:52:03,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 212 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2021-11-20 05:52:03,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:03,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 229 [2021-11-20 05:52:03,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:03,504 INFO L129 PetriNetUnfolder]: 123/515 cut-off events. [2021-11-20 05:52:03,504 INFO L130 PetriNetUnfolder]: For 105/106 co-relation queries the response was YES. [2021-11-20 05:52:03,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 515 events. 123/515 cut-off events. For 105/106 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1702 event pairs, 51 based on Foata normal form. 125/579 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2021-11-20 05:52:03,517 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 12 selfloop transitions, 0 changer transitions 6/200 dead transitions. [2021-11-20 05:52:03,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 448 flow [2021-11-20 05:52:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:52:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-20 05:52:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2021-11-20 05:52:03,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9432314410480349 [2021-11-20 05:52:03,543 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2021-11-20 05:52:03,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2021-11-20 05:52:03,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:03,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2021-11-20 05:52:03,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 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) [2021-11-20 05:52:03,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2021-11-20 05:52:03,582 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2021-11-20 05:52:03,585 INFO L186 Difference]: Start difference. First operand has 207 places, 212 transitions, 448 flow. Second operand 2 states and 432 transitions. [2021-11-20 05:52:03,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 448 flow [2021-11-20 05:52:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 432 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-20 05:52:03,599 INFO L242 Difference]: Finished difference. Result has 200 places, 194 transitions, 396 flow [2021-11-20 05:52:03,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2021-11-20 05:52:03,607 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -7 predicate places. [2021-11-20 05:52:03,607 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 396 flow [2021-11-20 05:52:03,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2021-11-20 05:52:03,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:03,615 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:03,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:52:03,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -399207150, now seen corresponding path program 1 times [2021-11-20 05:52:03,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:03,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157055600] [2021-11-20 05:52:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:03,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:04,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157055600] [2021-11-20 05:52:04,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157055600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:04,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:04,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:52:04,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3420223] [2021-11-20 05:52:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:04,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:04,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:04,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 229 [2021-11-20 05:52:04,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 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) [2021-11-20 05:52:04,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:04,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 229 [2021-11-20 05:52:04,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:04,366 INFO L129 PetriNetUnfolder]: 133/509 cut-off events. [2021-11-20 05:52:04,367 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2021-11-20 05:52:04,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 509 events. 133/509 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1579 event pairs, 14 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 724. Up to 133 conditions per place. [2021-11-20 05:52:04,377 INFO L132 encePairwiseOnDemand]: 223/229 looper letters, 42 selfloop transitions, 3 changer transitions 4/206 dead transitions. [2021-11-20 05:52:04,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 206 transitions, 523 flow [2021-11-20 05:52:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-20 05:52:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2021-11-20 05:52:04,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7991266375545851 [2021-11-20 05:52:04,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2021-11-20 05:52:04,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2021-11-20 05:52:04,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:04,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2021-11-20 05:52:04,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2021-11-20 05:52:04,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2021-11-20 05:52:04,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2021-11-20 05:52:04,396 INFO L186 Difference]: Start difference. First operand has 200 places, 194 transitions, 396 flow. Second operand 5 states and 915 transitions. [2021-11-20 05:52:04,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 206 transitions, 523 flow [2021-11-20 05:52:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 206 transitions, 523 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 05:52:04,413 INFO L242 Difference]: Finished difference. Result has 201 places, 196 transitions, 419 flow [2021-11-20 05:52:04,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2021-11-20 05:52:04,415 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2021-11-20 05:52:04,415 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 419 flow [2021-11-20 05:52:04,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 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) [2021-11-20 05:52:04,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:04,417 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:04,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:52:04,417 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1096965397, now seen corresponding path program 1 times [2021-11-20 05:52:04,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060587905] [2021-11-20 05:52:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:04,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:04,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060587905] [2021-11-20 05:52:04,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060587905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:04,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:04,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:52:04,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342817877] [2021-11-20 05:52:04,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:04,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:04,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:04,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2021-11-20 05:52:04,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:04,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:04,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2021-11-20 05:52:04,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:04,887 INFO L129 PetriNetUnfolder]: 208/754 cut-off events. [2021-11-20 05:52:04,888 INFO L130 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2021-11-20 05:52:04,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 754 events. 208/754 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3325 event pairs, 75 based on Foata normal form. 12/668 useless extension candidates. Maximal degree in co-relation 1178. Up to 207 conditions per place. [2021-11-20 05:52:04,900 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 30 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2021-11-20 05:52:04,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 519 flow [2021-11-20 05:52:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:52:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2021-11-20 05:52:04,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9082969432314411 [2021-11-20 05:52:04,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2021-11-20 05:52:04,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2021-11-20 05:52:04,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:04,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2021-11-20 05:52:04,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2021-11-20 05:52:04,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2021-11-20 05:52:04,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2021-11-20 05:52:04,913 INFO L186 Difference]: Start difference. First operand has 201 places, 196 transitions, 419 flow. Second operand 3 states and 624 transitions. [2021-11-20 05:52:04,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 519 flow [2021-11-20 05:52:04,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 208 transitions, 511 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-20 05:52:04,922 INFO L242 Difference]: Finished difference. Result has 199 places, 197 transitions, 426 flow [2021-11-20 05:52:04,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2021-11-20 05:52:04,925 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2021-11-20 05:52:04,926 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 426 flow [2021-11-20 05:52:04,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:04,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:04,927 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:04,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:52:04,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -422545413, now seen corresponding path program 1 times [2021-11-20 05:52:04,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:04,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950141672] [2021-11-20 05:52:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:04,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:05,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:05,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950141672] [2021-11-20 05:52:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950141672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:05,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:05,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:52:05,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966668203] [2021-11-20 05:52:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:05,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:05,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:05,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2021-11-20 05:52:05,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:05,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:05,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2021-11-20 05:52:05,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:05,327 INFO L129 PetriNetUnfolder]: 152/674 cut-off events. [2021-11-20 05:52:05,327 INFO L130 PetriNetUnfolder]: For 210/211 co-relation queries the response was YES. [2021-11-20 05:52:05,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 674 events. 152/674 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2850 event pairs, 47 based on Foata normal form. 12/606 useless extension candidates. Maximal degree in co-relation 1064. Up to 171 conditions per place. [2021-11-20 05:52:05,336 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2021-11-20 05:52:05,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 209 transitions, 535 flow [2021-11-20 05:52:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:52:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2021-11-20 05:52:05,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9068413391557496 [2021-11-20 05:52:05,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2021-11-20 05:52:05,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2021-11-20 05:52:05,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:05,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2021-11-20 05:52:05,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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) [2021-11-20 05:52:05,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2021-11-20 05:52:05,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2021-11-20 05:52:05,348 INFO L186 Difference]: Start difference. First operand has 199 places, 197 transitions, 426 flow. Second operand 3 states and 623 transitions. [2021-11-20 05:52:05,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 209 transitions, 535 flow [2021-11-20 05:52:05,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 209 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 05:52:05,356 INFO L242 Difference]: Finished difference. Result has 201 places, 198 transitions, 438 flow [2021-11-20 05:52:05,357 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2021-11-20 05:52:05,359 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2021-11-20 05:52:05,359 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 438 flow [2021-11-20 05:52:05,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:05,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:05,360 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:05,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:52:05,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -532077630, now seen corresponding path program 1 times [2021-11-20 05:52:05,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:05,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150516887] [2021-11-20 05:52:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:05,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:05,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:05,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150516887] [2021-11-20 05:52:05,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150516887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:05,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:05,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:52:05,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409070020] [2021-11-20 05:52:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:05,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:05,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:05,530 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2021-11-20 05:52:05,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 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) [2021-11-20 05:52:05,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:05,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2021-11-20 05:52:05,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:05,876 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2021-11-20 05:52:05,876 INFO L130 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2021-11-20 05:52:05,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 708 events. 107/708 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2830 event pairs, 36 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 1135. Up to 155 conditions per place. [2021-11-20 05:52:05,884 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 60 selfloop transitions, 11 changer transitions 0/227 dead transitions. [2021-11-20 05:52:05,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 227 transitions, 659 flow [2021-11-20 05:52:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:52:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:52:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2021-11-20 05:52:05,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8093158660844251 [2021-11-20 05:52:05,892 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2021-11-20 05:52:05,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2021-11-20 05:52:05,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:05,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2021-11-20 05:52:05,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 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) [2021-11-20 05:52:05,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 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) [2021-11-20 05:52:05,910 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 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) [2021-11-20 05:52:05,910 INFO L186 Difference]: Start difference. First operand has 201 places, 198 transitions, 438 flow. Second operand 9 states and 1668 transitions. [2021-11-20 05:52:05,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 227 transitions, 659 flow [2021-11-20 05:52:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 227 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 05:52:05,918 INFO L242 Difference]: Finished difference. Result has 210 places, 202 transitions, 478 flow [2021-11-20 05:52:05,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2021-11-20 05:52:05,922 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 3 predicate places. [2021-11-20 05:52:05,922 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 478 flow [2021-11-20 05:52:05,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 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) [2021-11-20 05:52:05,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:05,924 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:05,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:52:05,925 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1814960024, now seen corresponding path program 1 times [2021-11-20 05:52:05,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:05,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200789983] [2021-11-20 05:52:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:05,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:06,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:06,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200789983] [2021-11-20 05:52:06,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200789983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:06,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:06,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:52:06,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468006593] [2021-11-20 05:52:06,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:06,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:06,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:06,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2021-11-20 05:52:06,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 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) [2021-11-20 05:52:06,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:06,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2021-11-20 05:52:06,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:06,442 INFO L129 PetriNetUnfolder]: 123/934 cut-off events. [2021-11-20 05:52:06,442 INFO L130 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2021-11-20 05:52:06,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 934 events. 123/934 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4507 event pairs, 42 based on Foata normal form. 15/868 useless extension candidates. Maximal degree in co-relation 1469. Up to 198 conditions per place. [2021-11-20 05:52:06,454 INFO L132 encePairwiseOnDemand]: 221/229 looper letters, 55 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2021-11-20 05:52:06,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 660 flow [2021-11-20 05:52:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 05:52:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1300 transitions. [2021-11-20 05:52:06,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810979413599501 [2021-11-20 05:52:06,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1300 transitions. [2021-11-20 05:52:06,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1300 transitions. [2021-11-20 05:52:06,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:06,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1300 transitions. [2021-11-20 05:52:06,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 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) [2021-11-20 05:52:06,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2021-11-20 05:52:06,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2021-11-20 05:52:06,477 INFO L186 Difference]: Start difference. First operand has 210 places, 202 transitions, 478 flow. Second operand 7 states and 1300 transitions. [2021-11-20 05:52:06,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 660 flow [2021-11-20 05:52:06,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 219 transitions, 651 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-20 05:52:06,490 INFO L242 Difference]: Finished difference. Result has 215 places, 204 transitions, 499 flow [2021-11-20 05:52:06,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=215, PETRI_TRANSITIONS=204} [2021-11-20 05:52:06,495 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 8 predicate places. [2021-11-20 05:52:06,495 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 204 transitions, 499 flow [2021-11-20 05:52:06,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 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) [2021-11-20 05:52:06,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:06,497 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:06,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:52:06,497 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 669279275, now seen corresponding path program 1 times [2021-11-20 05:52:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647724106] [2021-11-20 05:52:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:07,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:07,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647724106] [2021-11-20 05:52:07,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647724106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:07,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:52:07,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925555007] [2021-11-20 05:52:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:07,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:52:07,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:52:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:07,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:07,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 204 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 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) [2021-11-20 05:52:07,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:07,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:07,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:09,722 INFO L129 PetriNetUnfolder]: 5032/10171 cut-off events. [2021-11-20 05:52:09,723 INFO L130 PetriNetUnfolder]: For 3380/3421 co-relation queries the response was YES. [2021-11-20 05:52:09,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 10171 events. 5032/10171 cut-off events. For 3380/3421 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82194 event pairs, 1257 based on Foata normal form. 22/8514 useless extension candidates. Maximal degree in co-relation 20354. Up to 3533 conditions per place. [2021-11-20 05:52:09,843 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 77 selfloop transitions, 14 changer transitions 30/288 dead transitions. [2021-11-20 05:52:09,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 288 transitions, 989 flow [2021-11-20 05:52:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:52:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:52:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1949 transitions. [2021-11-20 05:52:09,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8510917030567685 [2021-11-20 05:52:09,852 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1949 transitions. [2021-11-20 05:52:09,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1949 transitions. [2021-11-20 05:52:09,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:09,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1949 transitions. [2021-11-20 05:52:09,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.9) internal successors, (1949), 10 states have internal predecessors, (1949), 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) [2021-11-20 05:52:09,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 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) [2021-11-20 05:52:09,869 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 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) [2021-11-20 05:52:09,869 INFO L186 Difference]: Start difference. First operand has 215 places, 204 transitions, 499 flow. Second operand 10 states and 1949 transitions. [2021-11-20 05:52:09,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 288 transitions, 989 flow [2021-11-20 05:52:09,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 288 transitions, 977 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 05:52:09,880 INFO L242 Difference]: Finished difference. Result has 226 places, 213 transitions, 590 flow [2021-11-20 05:52:09,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2021-11-20 05:52:09,881 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 19 predicate places. [2021-11-20 05:52:09,882 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 590 flow [2021-11-20 05:52:09,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 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) [2021-11-20 05:52:09,883 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:09,883 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:09,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:52:09,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1474183133, now seen corresponding path program 2 times [2021-11-20 05:52:09,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:09,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791054314] [2021-11-20 05:52:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:09,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:10,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:10,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791054314] [2021-11-20 05:52:10,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791054314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:10,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:10,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:52:10,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086772200] [2021-11-20 05:52:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:10,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:52:10,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:52:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:10,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:10,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 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) [2021-11-20 05:52:10,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:10,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:10,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:13,399 INFO L129 PetriNetUnfolder]: 6104/12186 cut-off events. [2021-11-20 05:52:13,399 INFO L130 PetriNetUnfolder]: For 8766/8775 co-relation queries the response was YES. [2021-11-20 05:52:13,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28172 conditions, 12186 events. 6104/12186 cut-off events. For 8766/8775 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 101071 event pairs, 581 based on Foata normal form. 230/11704 useless extension candidates. Maximal degree in co-relation 28155. Up to 3770 conditions per place. [2021-11-20 05:52:13,526 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 120 selfloop transitions, 29 changer transitions 9/325 dead transitions. [2021-11-20 05:52:13,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 325 transitions, 1344 flow [2021-11-20 05:52:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:52:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 05:52:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2339 transitions. [2021-11-20 05:52:13,535 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8511644832605532 [2021-11-20 05:52:13,535 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2339 transitions. [2021-11-20 05:52:13,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2339 transitions. [2021-11-20 05:52:13,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:13,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2339 transitions. [2021-11-20 05:52:13,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 194.91666666666666) internal successors, (2339), 12 states have internal predecessors, (2339), 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) [2021-11-20 05:52:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 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) [2021-11-20 05:52:13,555 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 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) [2021-11-20 05:52:13,555 INFO L186 Difference]: Start difference. First operand has 226 places, 213 transitions, 590 flow. Second operand 12 states and 2339 transitions. [2021-11-20 05:52:13,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 325 transitions, 1344 flow [2021-11-20 05:52:13,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 325 transitions, 1322 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-11-20 05:52:13,632 INFO L242 Difference]: Finished difference. Result has 241 places, 233 transitions, 836 flow [2021-11-20 05:52:13,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=836, PETRI_PLACES=241, PETRI_TRANSITIONS=233} [2021-11-20 05:52:13,633 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 34 predicate places. [2021-11-20 05:52:13,634 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 233 transitions, 836 flow [2021-11-20 05:52:13,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 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) [2021-11-20 05:52:13,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:13,635 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:13,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:52:13,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1635283103, now seen corresponding path program 3 times [2021-11-20 05:52:13,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:13,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316799893] [2021-11-20 05:52:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:13,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:13,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:13,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316799893] [2021-11-20 05:52:13,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316799893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:13,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:13,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:52:13,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944433994] [2021-11-20 05:52:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:13,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:52:13,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:52:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:13,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2021-11-20 05:52:13,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 233 transitions, 836 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 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) [2021-11-20 05:52:13,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:13,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2021-11-20 05:52:13,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:17,067 INFO L129 PetriNetUnfolder]: 6159/13602 cut-off events. [2021-11-20 05:52:17,067 INFO L130 PetriNetUnfolder]: For 16188/16225 co-relation queries the response was YES. [2021-11-20 05:52:17,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34770 conditions, 13602 events. 6159/13602 cut-off events. For 16188/16225 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 122922 event pairs, 1248 based on Foata normal form. 55/12275 useless extension candidates. Maximal degree in co-relation 34745. Up to 4588 conditions per place. [2021-11-20 05:52:17,266 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 75 selfloop transitions, 29 changer transitions 18/294 dead transitions. [2021-11-20 05:52:17,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 294 transitions, 1383 flow [2021-11-20 05:52:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 05:52:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1587 transitions. [2021-11-20 05:52:17,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8662663755458515 [2021-11-20 05:52:17,274 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1587 transitions. [2021-11-20 05:52:17,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1587 transitions. [2021-11-20 05:52:17,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:17,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1587 transitions. [2021-11-20 05:52:17,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 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) [2021-11-20 05:52:17,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2021-11-20 05:52:17,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2021-11-20 05:52:17,290 INFO L186 Difference]: Start difference. First operand has 241 places, 233 transitions, 836 flow. Second operand 8 states and 1587 transitions. [2021-11-20 05:52:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 294 transitions, 1383 flow [2021-11-20 05:52:17,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 294 transitions, 1330 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-11-20 05:52:17,670 INFO L242 Difference]: Finished difference. Result has 248 places, 241 transitions, 969 flow [2021-11-20 05:52:17,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=969, PETRI_PLACES=248, PETRI_TRANSITIONS=241} [2021-11-20 05:52:17,672 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 41 predicate places. [2021-11-20 05:52:17,672 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 241 transitions, 969 flow [2021-11-20 05:52:17,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 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) [2021-11-20 05:52:17,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:17,674 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:17,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:52:17,675 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -210087189, now seen corresponding path program 4 times [2021-11-20 05:52:17,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380407574] [2021-11-20 05:52:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:17,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:18,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380407574] [2021-11-20 05:52:18,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380407574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:18,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:18,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:52:18,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127778315] [2021-11-20 05:52:18,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:18,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:52:18,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:52:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:18,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:18,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 241 transitions, 969 flow. Second operand has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 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) [2021-11-20 05:52:18,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:18,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:18,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:20,743 INFO L129 PetriNetUnfolder]: 6512/13568 cut-off events. [2021-11-20 05:52:20,743 INFO L130 PetriNetUnfolder]: For 20750/20782 co-relation queries the response was YES. [2021-11-20 05:52:20,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37084 conditions, 13568 events. 6512/13568 cut-off events. For 20750/20782 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 117703 event pairs, 810 based on Foata normal form. 28/12665 useless extension candidates. Maximal degree in co-relation 37056. Up to 4974 conditions per place. [2021-11-20 05:52:20,909 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 93 selfloop transitions, 34 changer transitions 11/307 dead transitions. [2021-11-20 05:52:20,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 307 transitions, 1514 flow [2021-11-20 05:52:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:52:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:52:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2021-11-20 05:52:20,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8495875788452207 [2021-11-20 05:52:20,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2021-11-20 05:52:20,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2021-11-20 05:52:20,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:20,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2021-11-20 05:52:20,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 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) [2021-11-20 05:52:20,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 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) [2021-11-20 05:52:20,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 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) [2021-11-20 05:52:20,931 INFO L186 Difference]: Start difference. First operand has 248 places, 241 transitions, 969 flow. Second operand 9 states and 1751 transitions. [2021-11-20 05:52:20,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 307 transitions, 1514 flow [2021-11-20 05:52:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 307 transitions, 1464 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-11-20 05:52:21,138 INFO L242 Difference]: Finished difference. Result has 253 places, 247 transitions, 1066 flow [2021-11-20 05:52:21,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1066, PETRI_PLACES=253, PETRI_TRANSITIONS=247} [2021-11-20 05:52:21,141 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 46 predicate places. [2021-11-20 05:52:21,141 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 247 transitions, 1066 flow [2021-11-20 05:52:21,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 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) [2021-11-20 05:52:21,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:21,151 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:21,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:52:21,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1569476661, now seen corresponding path program 5 times [2021-11-20 05:52:21,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:21,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280784947] [2021-11-20 05:52:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:21,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:21,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:21,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280784947] [2021-11-20 05:52:21,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280784947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:21,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:21,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:52:21,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500253198] [2021-11-20 05:52:21,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:21,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:52:21,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:52:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:21,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2021-11-20 05:52:21,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 247 transitions, 1066 flow. Second operand has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 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) [2021-11-20 05:52:21,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:21,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2021-11-20 05:52:21,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:25,003 INFO L129 PetriNetUnfolder]: 7471/17375 cut-off events. [2021-11-20 05:52:25,003 INFO L130 PetriNetUnfolder]: For 26875/27215 co-relation queries the response was YES. [2021-11-20 05:52:25,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46938 conditions, 17375 events. 7471/17375 cut-off events. For 26875/27215 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 172425 event pairs, 2083 based on Foata normal form. 169/16860 useless extension candidates. Maximal degree in co-relation 46908. Up to 5135 conditions per place. [2021-11-20 05:52:25,159 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 122 selfloop transitions, 54 changer transitions 18/366 dead transitions. [2021-11-20 05:52:25,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 366 transitions, 2194 flow [2021-11-20 05:52:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:52:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:52:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2194 transitions. [2021-11-20 05:52:25,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8709805478364431 [2021-11-20 05:52:25,167 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2194 transitions. [2021-11-20 05:52:25,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2194 transitions. [2021-11-20 05:52:25,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:25,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2194 transitions. [2021-11-20 05:52:25,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 199.45454545454547) internal successors, (2194), 11 states have internal predecessors, (2194), 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) [2021-11-20 05:52:25,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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) [2021-11-20 05:52:25,182 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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) [2021-11-20 05:52:25,182 INFO L186 Difference]: Start difference. First operand has 253 places, 247 transitions, 1066 flow. Second operand 11 states and 2194 transitions. [2021-11-20 05:52:25,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 366 transitions, 2194 flow [2021-11-20 05:52:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 366 transitions, 2095 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 05:52:25,420 INFO L242 Difference]: Finished difference. Result has 264 places, 273 transitions, 1507 flow [2021-11-20 05:52:25,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1507, PETRI_PLACES=264, PETRI_TRANSITIONS=273} [2021-11-20 05:52:25,421 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 57 predicate places. [2021-11-20 05:52:25,421 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 273 transitions, 1507 flow [2021-11-20 05:52:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 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) [2021-11-20 05:52:25,422 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:25,422 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:25,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:52:25,423 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1353642301, now seen corresponding path program 6 times [2021-11-20 05:52:25,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206368619] [2021-11-20 05:52:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:25,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:25,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:25,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206368619] [2021-11-20 05:52:25,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206368619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:25,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:25,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:52:25,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458509690] [2021-11-20 05:52:25,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:25,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:52:25,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:52:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:25,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:25,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 273 transitions, 1507 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 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) [2021-11-20 05:52:25,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:25,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:25,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:31,858 INFO L129 PetriNetUnfolder]: 11514/27142 cut-off events. [2021-11-20 05:52:31,858 INFO L130 PetriNetUnfolder]: For 56732/56994 co-relation queries the response was YES. [2021-11-20 05:52:32,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80392 conditions, 27142 events. 11514/27142 cut-off events. For 56732/56994 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 299376 event pairs, 2834 based on Foata normal form. 125/26102 useless extension candidates. Maximal degree in co-relation 80355. Up to 5460 conditions per place. [2021-11-20 05:52:32,136 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 131 selfloop transitions, 88 changer transitions 24/412 dead transitions. [2021-11-20 05:52:32,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 412 transitions, 2994 flow [2021-11-20 05:52:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:52:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:52:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2162 transitions. [2021-11-20 05:52:32,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8582770940849543 [2021-11-20 05:52:32,146 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2162 transitions. [2021-11-20 05:52:32,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2162 transitions. [2021-11-20 05:52:32,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:32,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2162 transitions. [2021-11-20 05:52:32,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.54545454545453) internal successors, (2162), 11 states have internal predecessors, (2162), 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) [2021-11-20 05:52:32,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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) [2021-11-20 05:52:32,163 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 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) [2021-11-20 05:52:32,164 INFO L186 Difference]: Start difference. First operand has 264 places, 273 transitions, 1507 flow. Second operand 11 states and 2162 transitions. [2021-11-20 05:52:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 412 transitions, 2994 flow [2021-11-20 05:52:33,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 412 transitions, 2961 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:52:33,152 INFO L242 Difference]: Finished difference. Result has 278 places, 311 transitions, 2297 flow [2021-11-20 05:52:33,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2297, PETRI_PLACES=278, PETRI_TRANSITIONS=311} [2021-11-20 05:52:33,153 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 71 predicate places. [2021-11-20 05:52:33,154 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 311 transitions, 2297 flow [2021-11-20 05:52:33,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 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) [2021-11-20 05:52:33,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:33,155 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:33,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:52:33,155 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1571234825, now seen corresponding path program 7 times [2021-11-20 05:52:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957386454] [2021-11-20 05:52:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:33,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:33,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957386454] [2021-11-20 05:52:33,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957386454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:33,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:33,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:52:33,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790985009] [2021-11-20 05:52:33,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:33,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:52:33,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:52:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:33,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2021-11-20 05:52:33,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 311 transitions, 2297 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 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) [2021-11-20 05:52:33,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:33,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2021-11-20 05:52:33,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:38,127 INFO L129 PetriNetUnfolder]: 8999/21508 cut-off events. [2021-11-20 05:52:38,127 INFO L130 PetriNetUnfolder]: For 62075/62757 co-relation queries the response was YES. [2021-11-20 05:52:38,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70711 conditions, 21508 events. 8999/21508 cut-off events. For 62075/62757 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 228167 event pairs, 1558 based on Foata normal form. 288/21052 useless extension candidates. Maximal degree in co-relation 70668. Up to 6170 conditions per place. [2021-11-20 05:52:38,386 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 140 selfloop transitions, 87 changer transitions 16/417 dead transitions. [2021-11-20 05:52:38,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 417 transitions, 3445 flow [2021-11-20 05:52:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:52:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:52:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2002 transitions. [2021-11-20 05:52:38,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.874235807860262 [2021-11-20 05:52:38,394 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2002 transitions. [2021-11-20 05:52:38,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2002 transitions. [2021-11-20 05:52:38,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:38,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2002 transitions. [2021-11-20 05:52:38,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 200.2) internal successors, (2002), 10 states have internal predecessors, (2002), 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) [2021-11-20 05:52:38,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 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) [2021-11-20 05:52:38,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 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) [2021-11-20 05:52:38,411 INFO L186 Difference]: Start difference. First operand has 278 places, 311 transitions, 2297 flow. Second operand 10 states and 2002 transitions. [2021-11-20 05:52:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 417 transitions, 3445 flow [2021-11-20 05:52:39,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 417 transitions, 3370 flow, removed 15 selfloop flow, removed 2 redundant places. [2021-11-20 05:52:39,581 INFO L242 Difference]: Finished difference. Result has 288 places, 319 transitions, 2572 flow [2021-11-20 05:52:39,582 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2572, PETRI_PLACES=288, PETRI_TRANSITIONS=319} [2021-11-20 05:52:39,582 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 81 predicate places. [2021-11-20 05:52:39,583 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 319 transitions, 2572 flow [2021-11-20 05:52:39,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 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) [2021-11-20 05:52:39,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:39,584 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:39,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:52:39,584 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -489934701, now seen corresponding path program 8 times [2021-11-20 05:52:39,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:39,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613043196] [2021-11-20 05:52:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:39,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:39,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613043196] [2021-11-20 05:52:39,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613043196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:39,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:52:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950261245] [2021-11-20 05:52:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:52:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:52:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:40,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:40,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 319 transitions, 2572 flow. Second operand has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 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) [2021-11-20 05:52:40,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:40,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:40,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:52:47,176 INFO L129 PetriNetUnfolder]: 13597/30757 cut-off events. [2021-11-20 05:52:47,176 INFO L130 PetriNetUnfolder]: For 130058/130682 co-relation queries the response was YES. [2021-11-20 05:52:47,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112709 conditions, 30757 events. 13597/30757 cut-off events. For 130058/130682 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 331925 event pairs, 2543 based on Foata normal form. 342/30032 useless extension candidates. Maximal degree in co-relation 112662. Up to 8561 conditions per place. [2021-11-20 05:52:47,590 INFO L132 encePairwiseOnDemand]: 215/229 looper letters, 182 selfloop transitions, 194 changer transitions 10/561 dead transitions. [2021-11-20 05:52:47,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 561 transitions, 6206 flow [2021-11-20 05:52:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:52:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 05:52:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2541 transitions. [2021-11-20 05:52:47,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535438360765871 [2021-11-20 05:52:47,596 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2541 transitions. [2021-11-20 05:52:47,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2541 transitions. [2021-11-20 05:52:47,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:52:47,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2541 transitions. [2021-11-20 05:52:47,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.46153846153845) internal successors, (2541), 13 states have internal predecessors, (2541), 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) [2021-11-20 05:52:47,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 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) [2021-11-20 05:52:47,615 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 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) [2021-11-20 05:52:47,615 INFO L186 Difference]: Start difference. First operand has 288 places, 319 transitions, 2572 flow. Second operand 13 states and 2541 transitions. [2021-11-20 05:52:47,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 561 transitions, 6206 flow [2021-11-20 05:52:50,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 561 transitions, 5984 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-11-20 05:52:50,686 INFO L242 Difference]: Finished difference. Result has 302 places, 440 transitions, 5262 flow [2021-11-20 05:52:50,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5262, PETRI_PLACES=302, PETRI_TRANSITIONS=440} [2021-11-20 05:52:50,688 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 95 predicate places. [2021-11-20 05:52:50,688 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 440 transitions, 5262 flow [2021-11-20 05:52:50,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 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) [2021-11-20 05:52:50,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:52:50,689 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:50,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:52:50,690 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:52:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash -112114935, now seen corresponding path program 9 times [2021-11-20 05:52:50,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:50,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697309237] [2021-11-20 05:52:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:50,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:52:51,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697309237] [2021-11-20 05:52:51,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697309237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:51,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:51,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:52:51,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163562493] [2021-11-20 05:52:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:51,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:52:51,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:52:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:51,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2021-11-20 05:52:51,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 440 transitions, 5262 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 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) [2021-11-20 05:52:51,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:52:51,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2021-11-20 05:52:51,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:53:01,664 INFO L129 PetriNetUnfolder]: 16846/37595 cut-off events. [2021-11-20 05:53:01,664 INFO L130 PetriNetUnfolder]: For 201229/201879 co-relation queries the response was YES. [2021-11-20 05:53:02,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155780 conditions, 37595 events. 16846/37595 cut-off events. For 201229/201879 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 412939 event pairs, 4448 based on Foata normal form. 264/36930 useless extension candidates. Maximal degree in co-relation 155728. Up to 11613 conditions per place. [2021-11-20 05:53:02,224 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 222 selfloop transitions, 426 changer transitions 30/853 dead transitions. [2021-11-20 05:53:02,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 853 transitions, 13944 flow [2021-11-20 05:53:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:53:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-20 05:53:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2531 transitions. [2021-11-20 05:53:02,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501847497480686 [2021-11-20 05:53:02,230 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2531 transitions. [2021-11-20 05:53:02,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2531 transitions. [2021-11-20 05:53:02,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:53:02,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2531 transitions. [2021-11-20 05:53:02,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 194.69230769230768) internal successors, (2531), 13 states have internal predecessors, (2531), 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) [2021-11-20 05:53:02,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 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) [2021-11-20 05:53:02,243 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 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) [2021-11-20 05:53:02,244 INFO L186 Difference]: Start difference. First operand has 302 places, 440 transitions, 5262 flow. Second operand 13 states and 2531 transitions. [2021-11-20 05:53:02,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 853 transitions, 13944 flow [2021-11-20 05:53:08,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 853 transitions, 13865 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-11-20 05:53:08,512 INFO L242 Difference]: Finished difference. Result has 320 places, 704 transitions, 12379 flow [2021-11-20 05:53:08,513 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12379, PETRI_PLACES=320, PETRI_TRANSITIONS=704} [2021-11-20 05:53:08,514 INFO L334 CegarLoopForPetriNet]: 207 programPoint places, 113 predicate places. [2021-11-20 05:53:08,514 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 704 transitions, 12379 flow [2021-11-20 05:53:08,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 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) [2021-11-20 05:53:08,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:53:08,515 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:08,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:53:08,516 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-20 05:53:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:08,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1727803853, now seen corresponding path program 10 times [2021-11-20 05:53:08,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:08,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295005398] [2021-11-20 05:53:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:08,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:53:08,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:08,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295005398] [2021-11-20 05:53:08,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295005398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:08,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:08,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:53:08,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835654391] [2021-11-20 05:53:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:08,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:53:08,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:53:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:08,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2021-11-20 05:53:08,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 704 transitions, 12379 flow. Second operand has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 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) [2021-11-20 05:53:08,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:53:08,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2021-11-20 05:53:08,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand