./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro --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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:04:41,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:04:41,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:04:41,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:04:41,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:04:41,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:04:41,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:04:41,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:04:41,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:04:41,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:04:41,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:04:41,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:04:41,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:04:41,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:04:41,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:04:41,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:04:41,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:04:41,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:04:41,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:04:41,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:04:41,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:04:41,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:04:41,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:04:41,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:04:41,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:04:41,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:04:41,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:04:41,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:04:41,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:04:41,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:04:41,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:04:41,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:04:41,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:04:41,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:04:41,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:04:41,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:04:41,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:04:41,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:04:41,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:04:41,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:04:41,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:04:41,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:04:41,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:04:41,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:04:41,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:04:41,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:04:41,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:04:41,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:04:41,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:04:41,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:04:41,762 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:04:41,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:04:41,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:04:41,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:04:41,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:04:41,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:04:41,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:04:41,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:04:41,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:04:41,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:04:41,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:04:41,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:04:41,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:04:41,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:04:41,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:04:41,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:04:41,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:41,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:04:41,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:04:41,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:04:41,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:04:41,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:04:41,769 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:04:41,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:04:41,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:04:41,770 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_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-11-18 21:04:42,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:04:42,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:04:42,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:04:42,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:04:42,120 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:04:42,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-18 21:04:42,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/data/9987c3df3/e8514d40d05d4daba7d44bac467eb436/FLAG420de3fa6 [2022-11-18 21:04:42,755 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:04:42,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-18 21:04:42,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/data/9987c3df3/e8514d40d05d4daba7d44bac467eb436/FLAG420de3fa6 [2022-11-18 21:04:43,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/data/9987c3df3/e8514d40d05d4daba7d44bac467eb436 [2022-11-18 21:04:43,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:04:43,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:04:43,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:43,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:04:43,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:04:43,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3122c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43, skipping insertion in model container [2022-11-18 21:04:43,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:04:43,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:04:43,394 WARN L234 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_cf41b149-d2fc-474f-b456-e5082a486279/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-18 21:04:43,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:43,415 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:04:43,441 WARN L234 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_cf41b149-d2fc-474f-b456-e5082a486279/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-18 21:04:43,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:43,461 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:04:43,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43 WrapperNode [2022-11-18 21:04:43,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:43,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:43,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:04:43,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:04:43,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,510 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 194 [2022-11-18 21:04:43,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:43,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:04:43,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:04:43,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:04:43,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:04:43,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:04:43,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:04:43,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:04:43,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (1/1) ... [2022-11-18 21:04:43,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:43,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:04:43,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:04:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:04:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:04:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:04:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:04:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:04:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:04:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:04:43,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:04:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:04:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:04:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:04:43,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:04:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:04:43,645 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:04:43,801 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:04:43,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:04:44,308 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:04:44,321 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:04:44,326 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 21:04:44,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:44 BoogieIcfgContainer [2022-11-18 21:04:44,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:04:44,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:04:44,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:04:44,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:04:44,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:04:43" (1/3) ... [2022-11-18 21:04:44,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb20199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:44, skipping insertion in model container [2022-11-18 21:04:44,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:43" (2/3) ... [2022-11-18 21:04:44,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb20199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:44, skipping insertion in model container [2022-11-18 21:04:44,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:44" (3/3) ... [2022-11-18 21:04:44,343 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-11-18 21:04:44,359 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:04:44,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:04:44,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:04:44,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:04:44,528 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:04:44,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 540 flow [2022-11-18 21:04:44,766 INFO L130 PetriNetUnfolder]: 21/260 cut-off events. [2022-11-18 21:04:44,766 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:04:44,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 260 events. 21/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 294 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 166. Up to 2 conditions per place. [2022-11-18 21:04:44,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 540 flow [2022-11-18 21:04:44,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 251 transitions, 514 flow [2022-11-18 21:04:44,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:04:44,798 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20a78804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:04:44,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 21:04:44,855 INFO L130 PetriNetUnfolder]: 21/250 cut-off events. [2022-11-18 21:04:44,855 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:04:44,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:44,857 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:44,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1296097438, now seen corresponding path program 1 times [2022-11-18 21:04:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553447043] [2022-11-18 21:04:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:45,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553447043] [2022-11-18 21:04:45,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553447043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:45,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:45,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:04:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184477542] [2022-11-18 21:04:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:45,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:04:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:04:45,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:04:45,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 262 [2022-11-18 21:04:45,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 251 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 244.0) internal successors, (488), 2 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:45,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 262 [2022-11-18 21:04:45,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:45,336 INFO L130 PetriNetUnfolder]: 4/234 cut-off events. [2022-11-18 21:04:45,336 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-18 21:04:45,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 4/234 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 276 event pairs, 0 based on Foata normal form. 20/237 useless extension candidates. Maximal degree in co-relation 157. Up to 5 conditions per place. [2022-11-18 21:04:45,340 INFO L137 encePairwiseOnDemand]: 245/262 looper letters, 4 selfloop transitions, 0 changer transitions 7/234 dead transitions. [2022-11-18 21:04:45,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 234 transitions, 488 flow [2022-11-18 21:04:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:04:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 21:04:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2022-11-18 21:04:45,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9561068702290076 [2022-11-18 21:04:45,367 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2022-11-18 21:04:45,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2022-11-18 21:04:45,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:45,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2022-11-18 21:04:45,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,393 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,395 INFO L175 Difference]: Start difference. First operand has 237 places, 251 transitions, 514 flow. Second operand 2 states and 501 transitions. [2022-11-18 21:04:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 234 transitions, 488 flow [2022-11-18 21:04:45,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 234 transitions, 480 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:04:45,408 INFO L231 Difference]: Finished difference. Result has 234 places, 227 transitions, 458 flow [2022-11-18 21:04:45,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=458, PETRI_PLACES=234, PETRI_TRANSITIONS=227} [2022-11-18 21:04:45,417 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -3 predicate places. [2022-11-18 21:04:45,418 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 227 transitions, 458 flow [2022-11-18 21:04:45,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 244.0) internal successors, (488), 2 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:45,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:04:45,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1599336726, now seen corresponding path program 1 times [2022-11-18 21:04:45,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:45,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674533710] [2022-11-18 21:04:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:45,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:45,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674533710] [2022-11-18 21:04:45,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674533710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:45,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:45,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:04:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840063617] [2022-11-18 21:04:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:04:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:04:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:45,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-18 21:04:45,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 227 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:45,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:45,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-18 21:04:45,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:46,042 INFO L130 PetriNetUnfolder]: 4/239 cut-off events. [2022-11-18 21:04:46,043 INFO L131 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-11-18 21:04:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 239 events. 4/239 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 261 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 277. Up to 25 conditions per place. [2022-11-18 21:04:46,046 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 28 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-18 21:04:46,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 235 transitions, 546 flow [2022-11-18 21:04:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:04:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:04:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1118 transitions. [2022-11-18 21:04:46,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8534351145038168 [2022-11-18 21:04:46,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1118 transitions. [2022-11-18 21:04:46,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1118 transitions. [2022-11-18 21:04:46,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:46,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1118 transitions. [2022-11-18 21:04:46,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,063 INFO L175 Difference]: Start difference. First operand has 234 places, 227 transitions, 458 flow. Second operand 5 states and 1118 transitions. [2022-11-18 21:04:46,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 235 transitions, 546 flow [2022-11-18 21:04:46,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 235 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:04:46,069 INFO L231 Difference]: Finished difference. Result has 232 places, 229 transitions, 490 flow [2022-11-18 21:04:46,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=232, PETRI_TRANSITIONS=229} [2022-11-18 21:04:46,070 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-18 21:04:46,071 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 229 transitions, 490 flow [2022-11-18 21:04:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:46,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:04:46,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1759571994, now seen corresponding path program 1 times [2022-11-18 21:04:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472980786] [2022-11-18 21:04:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:04:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:46,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472980786] [2022-11-18 21:04:46,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472980786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:46,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740317876] [2022-11-18 21:04:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:46,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:46,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:46,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:46,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:04:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:04:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:04:46,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:04:46,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740317876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:46,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:04:46,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 21:04:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381588670] [2022-11-18 21:04:46,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:46,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:04:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:04:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:04:46,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 262 [2022-11-18 21:04:46,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 229 transitions, 490 flow. Second operand has 15 states, 15 states have (on average 217.33333333333334) internal successors, (3260), 15 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:46,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:46,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 262 [2022-11-18 21:04:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:47,267 INFO L130 PetriNetUnfolder]: 4/257 cut-off events. [2022-11-18 21:04:47,267 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-18 21:04:47,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 257 events. 4/257 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 327. Up to 19 conditions per place. [2022-11-18 21:04:47,270 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 30 selfloop transitions, 22 changer transitions 0/249 dead transitions. [2022-11-18 21:04:47,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 249 transitions, 638 flow [2022-11-18 21:04:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:04:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:04:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2410 transitions. [2022-11-18 21:04:47,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8362248438584317 [2022-11-18 21:04:47,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2410 transitions. [2022-11-18 21:04:47,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2410 transitions. [2022-11-18 21:04:47,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:47,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2410 transitions. [2022-11-18 21:04:47,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 219.0909090909091) internal successors, (2410), 11 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:47,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:47,290 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:47,291 INFO L175 Difference]: Start difference. First operand has 232 places, 229 transitions, 490 flow. Second operand 11 states and 2410 transitions. [2022-11-18 21:04:47,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 249 transitions, 638 flow [2022-11-18 21:04:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 626 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:04:47,297 INFO L231 Difference]: Finished difference. Result has 242 places, 241 transitions, 589 flow [2022-11-18 21:04:47,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=589, PETRI_PLACES=242, PETRI_TRANSITIONS=241} [2022-11-18 21:04:47,299 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 5 predicate places. [2022-11-18 21:04:47,300 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 241 transitions, 589 flow [2022-11-18 21:04:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 217.33333333333334) internal successors, (3260), 15 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:47,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:47,303 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:47,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:47,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:47,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 68125822, now seen corresponding path program 2 times [2022-11-18 21:04:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:47,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888744234] [2022-11-18 21:04:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:04:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888744234] [2022-11-18 21:04:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888744234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391139831] [2022-11-18 21:04:47,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:04:47,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:47,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:47,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:48,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:04:48,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:04:48,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:04:48,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:04:48,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:04:48,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:48,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391139831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:48,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:48,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-18 21:04:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690294554] [2022-11-18 21:04:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:48,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:04:48,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:04:48,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 241 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:48,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:48,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:04:48,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:49,464 INFO L130 PetriNetUnfolder]: 281/1964 cut-off events. [2022-11-18 21:04:49,464 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-18 21:04:49,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1964 events. 281/1964 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14180 event pairs, 2 based on Foata normal form. 0/1810 useless extension candidates. Maximal degree in co-relation 2615. Up to 196 conditions per place. [2022-11-18 21:04:49,477 INFO L137 encePairwiseOnDemand]: 250/262 looper letters, 103 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2022-11-18 21:04:49,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 348 transitions, 1090 flow [2022-11-18 21:04:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:04:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 21:04:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3549 transitions. [2022-11-18 21:04:49,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466125954198473 [2022-11-18 21:04:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3549 transitions. [2022-11-18 21:04:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3549 transitions. [2022-11-18 21:04:49,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:49,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3549 transitions. [2022-11-18 21:04:49,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.8125) internal successors, (3549), 16 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,508 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,509 INFO L175 Difference]: Start difference. First operand has 242 places, 241 transitions, 589 flow. Second operand 16 states and 3549 transitions. [2022-11-18 21:04:49,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 348 transitions, 1090 flow [2022-11-18 21:04:49,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 348 transitions, 1073 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 21:04:49,519 INFO L231 Difference]: Finished difference. Result has 263 places, 272 transitions, 786 flow [2022-11-18 21:04:49,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=786, PETRI_PLACES=263, PETRI_TRANSITIONS=272} [2022-11-18 21:04:49,520 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 26 predicate places. [2022-11-18 21:04:49,520 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 272 transitions, 786 flow [2022-11-18 21:04:49,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:49,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:49,522 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:49,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 21:04:49,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:49,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:49,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1087575660, now seen corresponding path program 3 times [2022-11-18 21:04:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:49,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511136344] [2022-11-18 21:04:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:04:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:50,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511136344] [2022-11-18 21:04:50,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511136344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265202755] [2022-11-18 21:04:50,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:04:50,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:50,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:50,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:50,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:04:50,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:04:50,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:04:50,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:04:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:04:50,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:50,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265202755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:50,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:50,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-18 21:04:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434595613] [2022-11-18 21:04:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:50,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:04:50,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:04:50,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 272 transitions, 786 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:50,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:50,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:04:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:51,231 INFO L130 PetriNetUnfolder]: 396/2424 cut-off events. [2022-11-18 21:04:51,231 INFO L131 PetriNetUnfolder]: For 1141/1255 co-relation queries the response was YES. [2022-11-18 21:04:51,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3997 conditions, 2424 events. 396/2424 cut-off events. For 1141/1255 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 16554 event pairs, 148 based on Foata normal form. 20/2263 useless extension candidates. Maximal degree in co-relation 3980. Up to 334 conditions per place. [2022-11-18 21:04:51,250 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 109 selfloop transitions, 18 changer transitions 43/380 dead transitions. [2022-11-18 21:04:51,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 380 transitions, 1557 flow [2022-11-18 21:04:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:04:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:04:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2452 transitions. [2022-11-18 21:04:51,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507980569049272 [2022-11-18 21:04:51,256 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2452 transitions. [2022-11-18 21:04:51,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2452 transitions. [2022-11-18 21:04:51,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:51,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2452 transitions. [2022-11-18 21:04:51,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:51,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:51,271 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:51,271 INFO L175 Difference]: Start difference. First operand has 263 places, 272 transitions, 786 flow. Second operand 11 states and 2452 transitions. [2022-11-18 21:04:51,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 380 transitions, 1557 flow [2022-11-18 21:04:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 380 transitions, 1557 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:04:51,285 INFO L231 Difference]: Finished difference. Result has 278 places, 276 transitions, 895 flow [2022-11-18 21:04:51,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=895, PETRI_PLACES=278, PETRI_TRANSITIONS=276} [2022-11-18 21:04:51,287 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 41 predicate places. [2022-11-18 21:04:51,287 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 276 transitions, 895 flow [2022-11-18 21:04:51,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:51,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:51,289 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:51,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:51,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 175574608, now seen corresponding path program 4 times [2022-11-18 21:04:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242644675] [2022-11-18 21:04:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:04:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:51,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242644675] [2022-11-18 21:04:51,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242644675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:51,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612132392] [2022-11-18 21:04:51,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:04:51,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:51,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:51,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:51,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:04:51,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:04:51,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:04:52,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:04:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:04:52,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:04:52,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612132392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:52,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:04:52,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 21:04:52,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194654544] [2022-11-18 21:04:52,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:52,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:04:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:52,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:04:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:04:52,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 262 [2022-11-18 21:04:52,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 276 transitions, 895 flow. Second operand has 22 states, 22 states have (on average 217.1818181818182) internal successors, (4778), 22 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:52,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:52,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 262 [2022-11-18 21:04:52,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:53,120 INFO L130 PetriNetUnfolder]: 50/1116 cut-off events. [2022-11-18 21:04:53,121 INFO L131 PetriNetUnfolder]: For 308/320 co-relation queries the response was YES. [2022-11-18 21:04:53,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1116 events. 50/1116 cut-off events. For 308/320 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5360 event pairs, 4 based on Foata normal form. 6/1086 useless extension candidates. Maximal degree in co-relation 1546. Up to 36 conditions per place. [2022-11-18 21:04:53,131 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 38 selfloop transitions, 34 changer transitions 0/304 dead transitions. [2022-11-18 21:04:53,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 1151 flow [2022-11-18 21:04:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:04:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:04:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3714 transitions. [2022-11-18 21:04:53,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338572070049394 [2022-11-18 21:04:53,140 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3714 transitions. [2022-11-18 21:04:53,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3714 transitions. [2022-11-18 21:04:53,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:53,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3714 transitions. [2022-11-18 21:04:53,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 218.47058823529412) internal successors, (3714), 17 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:53,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 262.0) internal successors, (4716), 18 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:53,161 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 262.0) internal successors, (4716), 18 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:53,162 INFO L175 Difference]: Start difference. First operand has 278 places, 276 transitions, 895 flow. Second operand 17 states and 3714 transitions. [2022-11-18 21:04:53,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 1151 flow [2022-11-18 21:04:53,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 304 transitions, 1114 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 21:04:53,171 INFO L231 Difference]: Finished difference. Result has 282 places, 290 transitions, 1033 flow [2022-11-18 21:04:53,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1033, PETRI_PLACES=282, PETRI_TRANSITIONS=290} [2022-11-18 21:04:53,173 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 45 predicate places. [2022-11-18 21:04:53,173 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 290 transitions, 1033 flow [2022-11-18 21:04:53,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 217.1818181818182) internal successors, (4778), 22 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:53,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:53,176 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:53,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:53,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf41b149-d2fc-474f-b456-e5082a486279/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:53,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2090623916, now seen corresponding path program 5 times [2022-11-18 21:04:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:53,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560647846] [2022-11-18 21:04:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:04:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:53,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560647846] [2022-11-18 21:04:53,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560647846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:53,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:53,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:04:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140731256] [2022-11-18 21:04:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:53,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:04:53,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 290 transitions, 1033 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:53,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:53,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:04:53,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:54,796 INFO L130 PetriNetUnfolder]: 439/3019 cut-off events. [2022-11-18 21:04:54,799 INFO L131 PetriNetUnfolder]: For 2207/2319 co-relation queries the response was YES. [2022-11-18 21:04:54,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 3019 events. 439/3019 cut-off events. For 2207/2319 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 22913 event pairs, 167 based on Foata normal form. 31/2892 useless extension candidates. Maximal degree in co-relation 5069. Up to 261 conditions per place. [2022-11-18 21:04:54,823 INFO L137 encePairwiseOnDemand]: 254/262 looper letters, 118 selfloop transitions, 43 changer transitions 0/385 dead transitions. [2022-11-18 21:04:54,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 385 transitions, 1788 flow [2022-11-18 21:04:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:04:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:04:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1808 transitions. [2022-11-18 21:04:54,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625954198473282 [2022-11-18 21:04:54,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1808 transitions. [2022-11-18 21:04:54,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1808 transitions. [2022-11-18 21:04:54,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:54,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1808 transitions. [2022-11-18 21:04:54,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:54,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:54,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:54,842 INFO L175 Difference]: Start difference. First operand has 282 places, 290 transitions, 1033 flow. Second operand 8 states and 1808 transitions. [2022-11-18 21:04:54,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 385 transitions, 1788 flow [2022-11-18 21:04:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 385 transitions, 1743 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-18 21:04:54,863 INFO L231 Difference]: Finished difference. Result has 287 places, 308 transitions, 1273 flow [2022-11-18 21:04:54,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1273, PETRI_PLACES=287, PETRI_TRANSITIONS=308} [2022-11-18 21:04:54,865 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 50 predicate places. [2022-11-18 21:04:54,865 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 308 transitions, 1273 flow [2022-11-18 21:04:54,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:54,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:54,866 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:54,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:04:54,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1702544266, now seen corresponding path program 6 times [2022-11-18 21:04:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695370767] [2022-11-18 21:04:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:04:55,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695370767] [2022-11-18 21:04:55,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695370767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:55,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:55,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:04:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896547391] [2022-11-18 21:04:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:55,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:55,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:04:55,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 308 transitions, 1273 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:55,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:55,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:04:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:57,303 INFO L130 PetriNetUnfolder]: 1003/5989 cut-off events. [2022-11-18 21:04:57,304 INFO L131 PetriNetUnfolder]: For 1596/1631 co-relation queries the response was YES. [2022-11-18 21:04:57,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9387 conditions, 5989 events. 1003/5989 cut-off events. For 1596/1631 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 56305 event pairs, 130 based on Foata normal form. 11/5675 useless extension candidates. Maximal degree in co-relation 9359. Up to 897 conditions per place. [2022-11-18 21:04:57,354 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 75 selfloop transitions, 19 changer transitions 1/372 dead transitions. [2022-11-18 21:04:57,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 372 transitions, 1595 flow [2022-11-18 21:04:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:04:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:04:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2226 transitions. [2022-11-18 21:04:57,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.849618320610687 [2022-11-18 21:04:57,360 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2226 transitions. [2022-11-18 21:04:57,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2226 transitions. [2022-11-18 21:04:57,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:57,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2226 transitions. [2022-11-18 21:04:57,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 222.6) internal successors, (2226), 10 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:57,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:57,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:57,373 INFO L175 Difference]: Start difference. First operand has 287 places, 308 transitions, 1273 flow. Second operand 10 states and 2226 transitions. [2022-11-18 21:04:57,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 372 transitions, 1595 flow [2022-11-18 21:04:57,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 372 transitions, 1583 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-18 21:04:57,397 INFO L231 Difference]: Finished difference. Result has 299 places, 321 transitions, 1347 flow [2022-11-18 21:04:57,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1347, PETRI_PLACES=299, PETRI_TRANSITIONS=321} [2022-11-18 21:04:57,399 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 62 predicate places. [2022-11-18 21:04:57,399 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 321 transitions, 1347 flow [2022-11-18 21:04:57,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:57,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:57,400 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:57,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:04:57,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:57,401 INFO L85 PathProgramCache]: Analyzing trace with hash 143500657, now seen corresponding path program 1 times [2022-11-18 21:04:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593410328] [2022-11-18 21:04:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:57,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:04:57,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:57,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593410328] [2022-11-18 21:04:57,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593410328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:57,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:57,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:04:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428270648] [2022-11-18 21:04:57,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:57,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:04:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:04:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:04:57,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:04:57,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 321 transitions, 1347 flow. Second operand has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:57,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:57,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:04:57,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:59,551 INFO L130 PetriNetUnfolder]: 1000/5495 cut-off events. [2022-11-18 21:04:59,554 INFO L131 PetriNetUnfolder]: For 2334/2390 co-relation queries the response was YES. [2022-11-18 21:04:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 5495 events. 1000/5495 cut-off events. For 2334/2390 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 48768 event pairs, 362 based on Foata normal form. 22/5262 useless extension candidates. Maximal degree in co-relation 9398. Up to 925 conditions per place. [2022-11-18 21:04:59,612 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 95 selfloop transitions, 20 changer transitions 27/419 dead transitions. [2022-11-18 21:04:59,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 419 transitions, 1934 flow [2022-11-18 21:04:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:04:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:04:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2456 transitions. [2022-11-18 21:04:59,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521859819569744 [2022-11-18 21:04:59,619 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2456 transitions. [2022-11-18 21:04:59,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2456 transitions. [2022-11-18 21:04:59,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:59,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2456 transitions. [2022-11-18 21:04:59,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 223.27272727272728) internal successors, (2456), 11 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:59,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:59,637 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:59,637 INFO L175 Difference]: Start difference. First operand has 299 places, 321 transitions, 1347 flow. Second operand 11 states and 2456 transitions. [2022-11-18 21:04:59,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 419 transitions, 1934 flow [2022-11-18 21:04:59,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 419 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:04:59,662 INFO L231 Difference]: Finished difference. Result has 314 places, 333 transitions, 1475 flow [2022-11-18 21:04:59,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1475, PETRI_PLACES=314, PETRI_TRANSITIONS=333} [2022-11-18 21:04:59,664 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 77 predicate places. [2022-11-18 21:04:59,664 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 333 transitions, 1475 flow [2022-11-18 21:04:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:59,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:59,665 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:04:59,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:04:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 632237469, now seen corresponding path program 2 times [2022-11-18 21:04:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:59,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360052834] [2022-11-18 21:04:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360052834] [2022-11-18 21:05:00,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360052834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:00,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:00,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706428992] [2022-11-18 21:05:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:00,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:00,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:00,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 333 transitions, 1475 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:00,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:00,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:02,327 INFO L130 PetriNetUnfolder]: 1155/6321 cut-off events. [2022-11-18 21:05:02,327 INFO L131 PetriNetUnfolder]: For 5304/5468 co-relation queries the response was YES. [2022-11-18 21:05:02,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 6321 events. 1155/6321 cut-off events. For 5304/5468 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 58174 event pairs, 322 based on Foata normal form. 53/6282 useless extension candidates. Maximal degree in co-relation 12085. Up to 779 conditions per place. [2022-11-18 21:05:02,378 INFO L137 encePairwiseOnDemand]: 248/262 looper letters, 104 selfloop transitions, 63 changer transitions 8/452 dead transitions. [2022-11-18 21:05:02,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 452 transitions, 2350 flow [2022-11-18 21:05:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:05:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 21:05:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3124 transitions. [2022-11-18 21:05:02,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516902944383861 [2022-11-18 21:05:02,386 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3124 transitions. [2022-11-18 21:05:02,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3124 transitions. [2022-11-18 21:05:02,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:02,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3124 transitions. [2022-11-18 21:05:02,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.14285714285714) internal successors, (3124), 14 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:02,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:02,403 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:02,404 INFO L175 Difference]: Start difference. First operand has 314 places, 333 transitions, 1475 flow. Second operand 14 states and 3124 transitions. [2022-11-18 21:05:02,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 452 transitions, 2350 flow [2022-11-18 21:05:02,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 452 transitions, 2337 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 21:05:02,437 INFO L231 Difference]: Finished difference. Result has 331 places, 374 transitions, 1967 flow [2022-11-18 21:05:02,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1967, PETRI_PLACES=331, PETRI_TRANSITIONS=374} [2022-11-18 21:05:02,439 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 94 predicate places. [2022-11-18 21:05:02,439 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 374 transitions, 1967 flow [2022-11-18 21:05:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:02,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:02,440 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:05:02,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2107146303, now seen corresponding path program 3 times [2022-11-18 21:05:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:02,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982500133] [2022-11-18 21:05:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982500133] [2022-11-18 21:05:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982500133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:03,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:03,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821957084] [2022-11-18 21:05:03,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:03,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:03,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:03,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 374 transitions, 1967 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:03,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:03,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:03,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:05,283 INFO L130 PetriNetUnfolder]: 1190/7473 cut-off events. [2022-11-18 21:05:05,283 INFO L131 PetriNetUnfolder]: For 11699/12068 co-relation queries the response was YES. [2022-11-18 21:05:05,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15589 conditions, 7473 events. 1190/7473 cut-off events. For 11699/12068 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 72211 event pairs, 455 based on Foata normal form. 99/7487 useless extension candidates. Maximal degree in co-relation 15542. Up to 1067 conditions per place. [2022-11-18 21:05:05,365 INFO L137 encePairwiseOnDemand]: 251/262 looper letters, 141 selfloop transitions, 58 changer transitions 10/486 dead transitions. [2022-11-18 21:05:05,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 486 transitions, 2979 flow [2022-11-18 21:05:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2241 transitions. [2022-11-18 21:05:05,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553435114503817 [2022-11-18 21:05:05,376 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2241 transitions. [2022-11-18 21:05:05,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2241 transitions. [2022-11-18 21:05:05,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:05,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2241 transitions. [2022-11-18 21:05:05,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.1) internal successors, (2241), 10 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,392 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,392 INFO L175 Difference]: Start difference. First operand has 331 places, 374 transitions, 1967 flow. Second operand 10 states and 2241 transitions. [2022-11-18 21:05:05,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 486 transitions, 2979 flow [2022-11-18 21:05:05,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 486 transitions, 2954 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:05,498 INFO L231 Difference]: Finished difference. Result has 344 places, 395 transitions, 2363 flow [2022-11-18 21:05:05,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2363, PETRI_PLACES=344, PETRI_TRANSITIONS=395} [2022-11-18 21:05:05,499 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 107 predicate places. [2022-11-18 21:05:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 395 transitions, 2363 flow [2022-11-18 21:05:05,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:05,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:05,501 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:05:05,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1524243409, now seen corresponding path program 4 times [2022-11-18 21:05:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:05,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771632823] [2022-11-18 21:05:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:05,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:06,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771632823] [2022-11-18 21:05:06,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771632823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:06,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:06,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937806805] [2022-11-18 21:05:06,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:06,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:06,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:06,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:06,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 395 transitions, 2363 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:06,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:06,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:06,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:08,275 INFO L130 PetriNetUnfolder]: 1383/7995 cut-off events. [2022-11-18 21:05:08,275 INFO L131 PetriNetUnfolder]: For 20010/20485 co-relation queries the response was YES. [2022-11-18 21:05:08,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18266 conditions, 7995 events. 1383/7995 cut-off events. For 20010/20485 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 79125 event pairs, 477 based on Foata normal form. 95/7985 useless extension candidates. Maximal degree in co-relation 18212. Up to 1144 conditions per place. [2022-11-18 21:05:08,351 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 127 selfloop transitions, 84 changer transitions 4/492 dead transitions. [2022-11-18 21:05:08,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 492 transitions, 3503 flow [2022-11-18 21:05:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2243 transitions. [2022-11-18 21:05:08,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561068702290077 [2022-11-18 21:05:08,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2243 transitions. [2022-11-18 21:05:08,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2243 transitions. [2022-11-18 21:05:08,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:08,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2243 transitions. [2022-11-18 21:05:08,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.3) internal successors, (2243), 10 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:08,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:08,372 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:08,372 INFO L175 Difference]: Start difference. First operand has 344 places, 395 transitions, 2363 flow. Second operand 10 states and 2243 transitions. [2022-11-18 21:05:08,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 492 transitions, 3503 flow [2022-11-18 21:05:08,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 492 transitions, 3469 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:08,499 INFO L231 Difference]: Finished difference. Result has 360 places, 420 transitions, 2986 flow [2022-11-18 21:05:08,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2986, PETRI_PLACES=360, PETRI_TRANSITIONS=420} [2022-11-18 21:05:08,501 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 123 predicate places. [2022-11-18 21:05:08,502 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 420 transitions, 2986 flow [2022-11-18 21:05:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:08,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:08,503 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:05:08,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 115074163, now seen corresponding path program 5 times [2022-11-18 21:05:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:08,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450660035] [2022-11-18 21:05:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:08,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:09,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:09,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450660035] [2022-11-18 21:05:09,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450660035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:09,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:09,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838156556] [2022-11-18 21:05:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:09,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:09,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:09,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:09,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 420 transitions, 2986 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:09,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:09,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:09,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:11,476 INFO L130 PetriNetUnfolder]: 1475/8601 cut-off events. [2022-11-18 21:05:11,477 INFO L131 PetriNetUnfolder]: For 31665/32329 co-relation queries the response was YES. [2022-11-18 21:05:11,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21106 conditions, 8601 events. 1475/8601 cut-off events. For 31665/32329 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 86039 event pairs, 588 based on Foata normal form. 122/8614 useless extension candidates. Maximal degree in co-relation 21044. Up to 1081 conditions per place. [2022-11-18 21:05:11,566 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 163 selfloop transitions, 80 changer transitions 5/525 dead transitions. [2022-11-18 21:05:11,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 525 transitions, 4223 flow [2022-11-18 21:05:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2253 transitions. [2022-11-18 21:05:11,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8599236641221374 [2022-11-18 21:05:11,572 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2253 transitions. [2022-11-18 21:05:11,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2253 transitions. [2022-11-18 21:05:11,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:11,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2253 transitions. [2022-11-18 21:05:11,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:11,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:11,587 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:11,587 INFO L175 Difference]: Start difference. First operand has 360 places, 420 transitions, 2986 flow. Second operand 10 states and 2253 transitions. [2022-11-18 21:05:11,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 525 transitions, 4223 flow [2022-11-18 21:05:11,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 525 transitions, 4203 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-18 21:05:11,914 INFO L231 Difference]: Finished difference. Result has 376 places, 434 transitions, 3505 flow [2022-11-18 21:05:11,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3505, PETRI_PLACES=376, PETRI_TRANSITIONS=434} [2022-11-18 21:05:11,916 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 139 predicate places. [2022-11-18 21:05:11,916 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 434 transitions, 3505 flow [2022-11-18 21:05:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:11,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:11,917 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:05:11,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -535948195, now seen corresponding path program 6 times [2022-11-18 21:05:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:11,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306038954] [2022-11-18 21:05:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:12,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306038954] [2022-11-18 21:05:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306038954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:12,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:12,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340742180] [2022-11-18 21:05:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:12,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:12,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:12,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:12,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 434 transitions, 3505 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:12,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:12,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:12,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:15,552 INFO L130 PetriNetUnfolder]: 1841/11579 cut-off events. [2022-11-18 21:05:15,553 INFO L131 PetriNetUnfolder]: For 51180/51887 co-relation queries the response was YES. [2022-11-18 21:05:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27921 conditions, 11579 events. 1841/11579 cut-off events. For 51180/51887 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 128134 event pairs, 478 based on Foata normal form. 262/11708 useless extension candidates. Maximal degree in co-relation 27852. Up to 1320 conditions per place. [2022-11-18 21:05:15,676 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 130 selfloop transitions, 80 changer transitions 46/533 dead transitions. [2022-11-18 21:05:15,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 533 transitions, 4736 flow [2022-11-18 21:05:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:05:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:05:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2451 transitions. [2022-11-18 21:05:15,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504510756419154 [2022-11-18 21:05:15,682 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2451 transitions. [2022-11-18 21:05:15,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2451 transitions. [2022-11-18 21:05:15,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:15,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2451 transitions. [2022-11-18 21:05:15,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:15,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:15,694 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:15,694 INFO L175 Difference]: Start difference. First operand has 376 places, 434 transitions, 3505 flow. Second operand 11 states and 2451 transitions. [2022-11-18 21:05:15,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 533 transitions, 4736 flow [2022-11-18 21:05:15,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 533 transitions, 4658 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:15,950 INFO L231 Difference]: Finished difference. Result has 388 places, 423 transitions, 3496 flow [2022-11-18 21:05:15,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3496, PETRI_PLACES=388, PETRI_TRANSITIONS=423} [2022-11-18 21:05:15,951 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 151 predicate places. [2022-11-18 21:05:15,952 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 423 transitions, 3496 flow [2022-11-18 21:05:15,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:15,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:15,953 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:15,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:05:15,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:15,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash -388478113, now seen corresponding path program 7 times [2022-11-18 21:05:15,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:15,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272182640] [2022-11-18 21:05:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:15,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:16,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:16,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272182640] [2022-11-18 21:05:16,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272182640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:16,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:16,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66419160] [2022-11-18 21:05:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:16,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:16,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 423 transitions, 3496 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:16,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:16,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:20,087 INFO L130 PetriNetUnfolder]: 2061/12628 cut-off events. [2022-11-18 21:05:20,087 INFO L131 PetriNetUnfolder]: For 62424/63507 co-relation queries the response was YES. [2022-11-18 21:05:20,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30780 conditions, 12628 events. 2061/12628 cut-off events. For 62424/63507 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 140822 event pairs, 426 based on Foata normal form. 410/12882 useless extension candidates. Maximal degree in co-relation 30707. Up to 1372 conditions per place. [2022-11-18 21:05:20,241 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 136 selfloop transitions, 150 changer transitions 5/568 dead transitions. [2022-11-18 21:05:20,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 568 transitions, 5346 flow [2022-11-18 21:05:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:05:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 21:05:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3133 transitions. [2022-11-18 21:05:20,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.854143947655398 [2022-11-18 21:05:20,248 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3133 transitions. [2022-11-18 21:05:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3133 transitions. [2022-11-18 21:05:20,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:20,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3133 transitions. [2022-11-18 21:05:20,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.78571428571428) internal successors, (3133), 14 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:20,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:20,263 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:20,264 INFO L175 Difference]: Start difference. First operand has 388 places, 423 transitions, 3496 flow. Second operand 14 states and 3133 transitions. [2022-11-18 21:05:20,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 568 transitions, 5346 flow [2022-11-18 21:05:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 568 transitions, 5222 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-11-18 21:05:20,497 INFO L231 Difference]: Finished difference. Result has 394 places, 498 transitions, 4812 flow [2022-11-18 21:05:20,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4812, PETRI_PLACES=394, PETRI_TRANSITIONS=498} [2022-11-18 21:05:20,498 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 157 predicate places. [2022-11-18 21:05:20,498 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 498 transitions, 4812 flow [2022-11-18 21:05:20,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:20,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:20,499 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:05:20,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1964505637, now seen corresponding path program 8 times [2022-11-18 21:05:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:20,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628997975] [2022-11-18 21:05:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:21,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628997975] [2022-11-18 21:05:21,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628997975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:21,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:21,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251435701] [2022-11-18 21:05:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:21,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:21,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 498 transitions, 4812 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:21,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:21,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:21,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:24,983 INFO L130 PetriNetUnfolder]: 2024/12379 cut-off events. [2022-11-18 21:05:24,983 INFO L131 PetriNetUnfolder]: For 74877/76370 co-relation queries the response was YES. [2022-11-18 21:05:25,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33263 conditions, 12379 events. 2024/12379 cut-off events. For 74877/76370 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 136825 event pairs, 528 based on Foata normal form. 497/12720 useless extension candidates. Maximal degree in co-relation 33186. Up to 1477 conditions per place. [2022-11-18 21:05:25,134 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 159 selfloop transitions, 117 changer transitions 10/563 dead transitions. [2022-11-18 21:05:25,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 563 transitions, 5748 flow [2022-11-18 21:05:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2240 transitions. [2022-11-18 21:05:25,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549618320610687 [2022-11-18 21:05:25,140 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2240 transitions. [2022-11-18 21:05:25,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2240 transitions. [2022-11-18 21:05:25,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:25,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2240 transitions. [2022-11-18 21:05:25,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,151 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,151 INFO L175 Difference]: Start difference. First operand has 394 places, 498 transitions, 4812 flow. Second operand 10 states and 2240 transitions. [2022-11-18 21:05:25,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 563 transitions, 5748 flow [2022-11-18 21:05:25,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 563 transitions, 5696 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-18 21:05:25,394 INFO L231 Difference]: Finished difference. Result has 405 places, 497 transitions, 4992 flow [2022-11-18 21:05:25,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4992, PETRI_PLACES=405, PETRI_TRANSITIONS=497} [2022-11-18 21:05:25,396 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 168 predicate places. [2022-11-18 21:05:25,396 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 497 transitions, 4992 flow [2022-11-18 21:05:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:25,397 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:25,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:05:25,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -121132145, now seen corresponding path program 9 times [2022-11-18 21:05:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:25,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417233743] [2022-11-18 21:05:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:26,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417233743] [2022-11-18 21:05:26,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417233743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:26,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:26,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613656050] [2022-11-18 21:05:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:26,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:26,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 497 transitions, 4992 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:26,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:26,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:29,705 INFO L130 PetriNetUnfolder]: 2044/12609 cut-off events. [2022-11-18 21:05:29,705 INFO L131 PetriNetUnfolder]: For 79413/80883 co-relation queries the response was YES. [2022-11-18 21:05:29,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34789 conditions, 12609 events. 2044/12609 cut-off events. For 79413/80883 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 140250 event pairs, 472 based on Foata normal form. 417/12872 useless extension candidates. Maximal degree in co-relation 34709. Up to 1454 conditions per place. [2022-11-18 21:05:29,887 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 157 selfloop transitions, 119 changer transitions 8/561 dead transitions. [2022-11-18 21:05:29,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 561 transitions, 6052 flow [2022-11-18 21:05:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2241 transitions. [2022-11-18 21:05:29,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553435114503817 [2022-11-18 21:05:29,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2241 transitions. [2022-11-18 21:05:29,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2241 transitions. [2022-11-18 21:05:29,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:29,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2241 transitions. [2022-11-18 21:05:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.1) internal successors, (2241), 10 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:29,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:29,907 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:29,907 INFO L175 Difference]: Start difference. First operand has 405 places, 497 transitions, 4992 flow. Second operand 10 states and 2241 transitions. [2022-11-18 21:05:29,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 561 transitions, 6052 flow [2022-11-18 21:05:30,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 561 transitions, 5812 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-18 21:05:30,181 INFO L231 Difference]: Finished difference. Result has 409 places, 506 transitions, 5284 flow [2022-11-18 21:05:30,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5284, PETRI_PLACES=409, PETRI_TRANSITIONS=506} [2022-11-18 21:05:30,182 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 172 predicate places. [2022-11-18 21:05:30,182 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 506 transitions, 5284 flow [2022-11-18 21:05:30,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:30,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:30,183 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:05:30,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1298899839, now seen corresponding path program 10 times [2022-11-18 21:05:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:30,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189321720] [2022-11-18 21:05:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:30,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189321720] [2022-11-18 21:05:30,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189321720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:30,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:30,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:30,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696210072] [2022-11-18 21:05:30,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:30,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:30,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 506 transitions, 5284 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:30,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:30,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:34,989 INFO L130 PetriNetUnfolder]: 2226/13782 cut-off events. [2022-11-18 21:05:34,990 INFO L131 PetriNetUnfolder]: For 91072/92668 co-relation queries the response was YES. [2022-11-18 21:05:35,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38315 conditions, 13782 events. 2226/13782 cut-off events. For 91072/92668 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 156775 event pairs, 519 based on Foata normal form. 441/14054 useless extension candidates. Maximal degree in co-relation 38233. Up to 1440 conditions per place. [2022-11-18 21:05:35,182 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 194 selfloop transitions, 124 changer transitions 5/600 dead transitions. [2022-11-18 21:05:35,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 600 transitions, 6689 flow [2022-11-18 21:05:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:05:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2260 transitions. [2022-11-18 21:05:35,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625954198473282 [2022-11-18 21:05:35,187 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2260 transitions. [2022-11-18 21:05:35,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2260 transitions. [2022-11-18 21:05:35,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:35,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2260 transitions. [2022-11-18 21:05:35,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:35,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:35,196 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:35,196 INFO L175 Difference]: Start difference. First operand has 409 places, 506 transitions, 5284 flow. Second operand 10 states and 2260 transitions. [2022-11-18 21:05:35,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 600 transitions, 6689 flow [2022-11-18 21:05:35,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 600 transitions, 6483 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-18 21:05:35,520 INFO L231 Difference]: Finished difference. Result has 418 places, 522 transitions, 5830 flow [2022-11-18 21:05:35,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5830, PETRI_PLACES=418, PETRI_TRANSITIONS=522} [2022-11-18 21:05:35,521 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 181 predicate places. [2022-11-18 21:05:35,521 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 522 transitions, 5830 flow [2022-11-18 21:05:35,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:35,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:35,522 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:05:35,523 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1755472315, now seen corresponding path program 11 times [2022-11-18 21:05:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:35,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983115741] [2022-11-18 21:05:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 21:05:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:36,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983115741] [2022-11-18 21:05:36,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983115741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:36,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:36,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:36,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434221554] [2022-11-18 21:05:36,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:36,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:36,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:36,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:36,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 522 transitions, 5830 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:36,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:36,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:36,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:40,789 INFO L130 PetriNetUnfolder]: 2307/14336 cut-off events. [2022-11-18 21:05:40,789 INFO L131 PetriNetUnfolder]: For 102794/104568 co-relation queries the response was YES. [2022-11-18 21:05:40,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40983 conditions, 14336 events. 2307/14336 cut-off events. For 102794/104568 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 164690 event pairs, 461 based on Foata normal form. 690/14842 useless extension candidates. Maximal degree in co-relation 40897. Up to 1376 conditions per place. [2022-11-18 21:05:40,998 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 156 selfloop transitions, 172 changer transitions 10/615 dead transitions. [2022-11-18 21:05:40,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 615 transitions, 7230 flow [2022-11-18 21:05:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:05:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:05:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2926 transitions. [2022-11-18 21:05:41,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8590722254844392 [2022-11-18 21:05:41,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2926 transitions. [2022-11-18 21:05:41,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2926 transitions. [2022-11-18 21:05:41,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:41,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2926 transitions. [2022-11-18 21:05:41,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 225.07692307692307) internal successors, (2926), 13 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:41,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 262.0) internal successors, (3668), 14 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 262.0) internal successors, (3668), 14 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:41,014 INFO L175 Difference]: Start difference. First operand has 418 places, 522 transitions, 5830 flow. Second operand 13 states and 2926 transitions. [2022-11-18 21:05:41,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 615 transitions, 7230 flow [2022-11-18 21:05:41,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 615 transitions, 7118 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:41,324 INFO L231 Difference]: Finished difference. Result has 435 places, 541 transitions, 6658 flow [2022-11-18 21:05:41,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=5682, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6658, PETRI_PLACES=435, PETRI_TRANSITIONS=541} [2022-11-18 21:05:41,325 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 198 predicate places. [2022-11-18 21:05:41,326 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 541 transitions, 6658 flow [2022-11-18 21:05:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:41,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:41,326 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:05:41,327 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:41,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash 950918381, now seen corresponding path program 12 times [2022-11-18 21:05:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:41,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050474800] [2022-11-18 21:05:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:41,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050474800] [2022-11-18 21:05:41,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050474800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:41,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:41,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118806673] [2022-11-18 21:05:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:41,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:41,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:41,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 541 transitions, 6658 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:41,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:41,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:41,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:46,777 INFO L130 PetriNetUnfolder]: 2276/14213 cut-off events. [2022-11-18 21:05:46,777 INFO L131 PetriNetUnfolder]: For 117641/119537 co-relation queries the response was YES. [2022-11-18 21:05:46,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42762 conditions, 14213 events. 2276/14213 cut-off events. For 117641/119537 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 162932 event pairs, 451 based on Foata normal form. 580/14617 useless extension candidates. Maximal degree in co-relation 42669. Up to 1586 conditions per place. [2022-11-18 21:05:47,006 INFO L137 encePairwiseOnDemand]: 245/262 looper letters, 162 selfloop transitions, 155 changer transitions 10/604 dead transitions. [2022-11-18 21:05:47,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 604 transitions, 7767 flow [2022-11-18 21:05:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:05:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:05:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2469 transitions. [2022-11-18 21:05:47,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8566967383761277 [2022-11-18 21:05:47,010 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2469 transitions. [2022-11-18 21:05:47,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2469 transitions. [2022-11-18 21:05:47,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:47,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2469 transitions. [2022-11-18 21:05:47,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 224.45454545454547) internal successors, (2469), 11 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,020 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,020 INFO L175 Difference]: Start difference. First operand has 435 places, 541 transitions, 6658 flow. Second operand 11 states and 2469 transitions. [2022-11-18 21:05:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 604 transitions, 7767 flow [2022-11-18 21:05:47,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 604 transitions, 7622 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-18 21:05:47,404 INFO L231 Difference]: Finished difference. Result has 443 places, 551 transitions, 7094 flow [2022-11-18 21:05:47,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7094, PETRI_PLACES=443, PETRI_TRANSITIONS=551} [2022-11-18 21:05:47,405 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 206 predicate places. [2022-11-18 21:05:47,405 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 551 transitions, 7094 flow [2022-11-18 21:05:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:47,406 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 21:05:47,407 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 21:05:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1470651055, now seen corresponding path program 13 times [2022-11-18 21:05:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832328073] [2022-11-18 21:05:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 21:05:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832328073] [2022-11-18 21:05:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832328073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:47,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:47,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185574666] [2022-11-18 21:05:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:47,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:47,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-18 21:05:47,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 551 transitions, 7094 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:47,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-18 21:05:47,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand