./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 10:55:04,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:55:04,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:55:04,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:55:04,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:55:04,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:55:04,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:55:04,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:55:04,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:55:04,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:55:04,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:55:04,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:55:04,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:55:04,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:55:04,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:55:04,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:55:04,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:55:04,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:55:04,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:55:04,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:55:04,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:55:04,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:55:04,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:55:04,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:55:04,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:55:04,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:55:04,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:55:04,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:55:04,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:55:04,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:55:04,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:55:04,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:55:04,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:55:04,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:55:04,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:55:04,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:55:04,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:55:04,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:55:04,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:55:04,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:55:04,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:55:04,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 10:55:04,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:55:04,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:55:04,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:55:04,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:55:04,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:55:04,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:55:04,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:55:04,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:55:04,672 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:55:04,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:55:04,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 10:55:04,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:55:04,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:04,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:55:04,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:55:04,675 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2022-12-13 10:55:04,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:55:04,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:55:04,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:55:04,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:55:04,855 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:55:04,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-12-13 10:55:07,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:55:07,607 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:55:07,607 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-12-13 10:55:07,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/data/e713e6453/6e4d757445594d58abc4bfe25f8fb060/FLAG2a6dbfa77 [2022-12-13 10:55:07,630 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/data/e713e6453/6e4d757445594d58abc4bfe25f8fb060 [2022-12-13 10:55:07,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:55:07,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:55:07,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:07,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:55:07,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:55:07,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:07" (1/1) ... [2022-12-13 10:55:07,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79680eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:07, skipping insertion in model container [2022-12-13 10:55:07,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:55:07" (1/1) ... [2022-12-13 10:55:07,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:55:07,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:55:07,806 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:55:07,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-12-13 10:55:07,961 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-12-13 10:55:07,962 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-12-13 10:55:07,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:07,975 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:55:07,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:55:08,011 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-12-13 10:55:08,012 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-12-13 10:55:08,012 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-12-13 10:55:08,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:55:08,042 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:55:08,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08 WrapperNode [2022-12-13 10:55:08,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:55:08,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:08,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:55:08,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:55:08,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,099 INFO L138 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2022-12-13 10:55:08,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:55:08,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:55:08,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:55:08,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:55:08,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:55:08,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:55:08,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:55:08,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:55:08,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (1/1) ... [2022-12-13 10:55:08,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:55:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:55:08,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:55:08,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c606989c-4cba-4d6b-bb81-ea64db64d5a8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-12-13 10:55:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:55:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:55:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:55:08,181 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 10:55:08,284 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:55:08,286 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:55:08,640 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:55:08,648 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:55:08,648 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 10:55:08,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:08 BoogieIcfgContainer [2022-12-13 10:55:08,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:55:08,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:55:08,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:55:08,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:55:08,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:55:07" (1/3) ... [2022-12-13 10:55:08,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16e8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:08, skipping insertion in model container [2022-12-13 10:55:08,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:55:08" (2/3) ... [2022-12-13 10:55:08,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16e8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:55:08, skipping insertion in model container [2022-12-13 10:55:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:55:08" (3/3) ... [2022-12-13 10:55:08,659 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-12-13 10:55:08,667 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 10:55:08,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:55:08,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-12-13 10:55:08,675 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:55:08,746 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 10:55:08,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 267 transitions, 542 flow [2022-12-13 10:55:08,862 INFO L130 PetriNetUnfolder]: 10/266 cut-off events. [2022-12-13 10:55:08,862 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 10:55:08,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 266 events. 10/266 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 538 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-12-13 10:55:08,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 267 transitions, 542 flow [2022-12-13 10:55:08,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 257 transitions, 517 flow [2022-12-13 10:55:08,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:55:08,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 257 transitions, 517 flow [2022-12-13 10:55:08,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 257 transitions, 517 flow [2022-12-13 10:55:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 257 transitions, 517 flow [2022-12-13 10:55:08,942 INFO L130 PetriNetUnfolder]: 10/257 cut-off events. [2022-12-13 10:55:08,943 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:55:08,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 257 events. 10/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 474 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-12-13 10:55:08,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 21228 [2022-12-13 10:55:20,441 INFO L134 LiptonReduction]: Checked pairs total: 128979 [2022-12-13 10:55:20,442 INFO L136 LiptonReduction]: Total number of compositions: 171 [2022-12-13 10:55:20,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:55:20,456 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;@7a4e9713, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:55:20,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 10:55:20,457 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 10:55:20,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:55:20,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:20,458 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 10:55:20,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash 904, now seen corresponding path program 1 times [2022-12-13 10:55:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154806836] [2022-12-13 10:55:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:20,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154806836] [2022-12-13 10:55:20,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154806836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:20,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:20,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 10:55:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509140788] [2022-12-13 10:55:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 10:55:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 10:55:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 10:55:20,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 438 [2022-12-13 10:55:20,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 239 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:20,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 438 [2022-12-13 10:55:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:20,725 INFO L130 PetriNetUnfolder]: 140/776 cut-off events. [2022-12-13 10:55:20,725 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:55:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 776 events. 140/776 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4703 event pairs, 89 based on Foata normal form. 28/690 useless extension candidates. Maximal degree in co-relation 1022. Up to 251 conditions per place. [2022-12-13 10:55:20,730 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 24 selfloop transitions, 0 changer transitions 0/113 dead transitions. [2022-12-13 10:55:20,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 277 flow [2022-12-13 10:55:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 10:55:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 10:55:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 547 transitions. [2022-12-13 10:55:20,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6244292237442922 [2022-12-13 10:55:20,742 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 547 transitions. [2022-12-13 10:55:20,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 547 transitions. [2022-12-13 10:55:20,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:20,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 547 transitions. [2022-12-13 10:55:20,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.5) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,754 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,755 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 239 flow. Second operand 2 states and 547 transitions. [2022-12-13 10:55:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 277 flow [2022-12-13 10:55:20,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:20,760 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 228 flow [2022-12-13 10:55:20,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2022-12-13 10:55:20,763 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -2 predicate places. [2022-12-13 10:55:20,764 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 228 flow [2022-12-13 10:55:20,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:20,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:20,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:55:20,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1149733626, now seen corresponding path program 1 times [2022-12-13 10:55:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891542550] [2022-12-13 10:55:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:20,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891542550] [2022-12-13 10:55:20,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891542550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:20,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:20,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:55:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440347648] [2022-12-13 10:55:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:20,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:55:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:55:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:55:20,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 438 [2022-12-13 10:55:20,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:20,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:20,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 438 [2022-12-13 10:55:20,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:21,094 INFO L130 PetriNetUnfolder]: 255/1409 cut-off events. [2022-12-13 10:55:21,094 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:55:21,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 1409 events. 255/1409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9239 event pairs, 128 based on Foata normal form. 0/1217 useless extension candidates. Maximal degree in co-relation 1864. Up to 252 conditions per place. [2022-12-13 10:55:21,099 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 42 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-12-13 10:55:21,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 133 transitions, 356 flow [2022-12-13 10:55:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:55:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:55:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-12-13 10:55:21,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6164383561643836 [2022-12-13 10:55:21,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-12-13 10:55:21,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-12-13 10:55:21,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:21,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-12-13 10:55:21,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:21,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:21,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:21,109 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 228 flow. Second operand 3 states and 810 transitions. [2022-12-13 10:55:21,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 133 transitions, 356 flow [2022-12-13 10:55:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 133 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:21,112 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 240 flow [2022-12-13 10:55:21,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2022-12-13 10:55:21,112 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 1 predicate places. [2022-12-13 10:55:21,113 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 240 flow [2022-12-13 10:55:21,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:21,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:21,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:21,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:55:21,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1594399613, now seen corresponding path program 1 times [2022-12-13 10:55:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:21,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682579831] [2022-12-13 10:55:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:21,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682579831] [2022-12-13 10:55:21,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682579831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:21,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:21,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484371950] [2022-12-13 10:55:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:22,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 438 [2022-12-13 10:55:22,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:22,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:22,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 438 [2022-12-13 10:55:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:22,713 INFO L130 PetriNetUnfolder]: 1380/4754 cut-off events. [2022-12-13 10:55:22,713 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-12-13 10:55:22,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7568 conditions, 4754 events. 1380/4754 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 37374 event pairs, 254 based on Foata normal form. 0/4255 useless extension candidates. Maximal degree in co-relation 7563. Up to 1775 conditions per place. [2022-12-13 10:55:22,729 INFO L137 encePairwiseOnDemand]: 415/438 looper letters, 92 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2022-12-13 10:55:22,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 204 transitions, 734 flow [2022-12-13 10:55:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1472 transitions. [2022-12-13 10:55:22,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601217656012176 [2022-12-13 10:55:22,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1472 transitions. [2022-12-13 10:55:22,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1472 transitions. [2022-12-13 10:55:22,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:22,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1472 transitions. [2022-12-13 10:55:22,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:22,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:22,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:22,738 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 240 flow. Second operand 6 states and 1472 transitions. [2022-12-13 10:55:22,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 204 transitions, 734 flow [2022-12-13 10:55:22,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 204 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:55:22,742 INFO L231 Difference]: Finished difference. Result has 125 places, 157 transitions, 546 flow [2022-12-13 10:55:22,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=125, PETRI_TRANSITIONS=157} [2022-12-13 10:55:22,743 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 10 predicate places. [2022-12-13 10:55:22,743 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 157 transitions, 546 flow [2022-12-13 10:55:22,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:22,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:22,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:22,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:55:22,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1900440757, now seen corresponding path program 1 times [2022-12-13 10:55:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:22,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99237046] [2022-12-13 10:55:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99237046] [2022-12-13 10:55:22,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99237046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:22,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:22,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436127492] [2022-12-13 10:55:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:23,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 438 [2022-12-13 10:55:23,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 157 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:23,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:23,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 438 [2022-12-13 10:55:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:24,459 INFO L130 PetriNetUnfolder]: 2738/8903 cut-off events. [2022-12-13 10:55:24,459 INFO L131 PetriNetUnfolder]: For 1881/1921 co-relation queries the response was YES. [2022-12-13 10:55:24,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17377 conditions, 8903 events. 2738/8903 cut-off events. For 1881/1921 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 77743 event pairs, 621 based on Foata normal form. 0/7949 useless extension candidates. Maximal degree in co-relation 17368. Up to 2990 conditions per place. [2022-12-13 10:55:24,487 INFO L137 encePairwiseOnDemand]: 414/438 looper letters, 148 selfloop transitions, 45 changer transitions 0/262 dead transitions. [2022-12-13 10:55:24,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 262 transitions, 1250 flow [2022-12-13 10:55:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1448 transitions. [2022-12-13 10:55:24,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5509893455098934 [2022-12-13 10:55:24,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1448 transitions. [2022-12-13 10:55:24,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1448 transitions. [2022-12-13 10:55:24,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:24,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1448 transitions. [2022-12-13 10:55:24,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.33333333333334) internal successors, (1448), 6 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:24,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:24,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:24,496 INFO L175 Difference]: Start difference. First operand has 125 places, 157 transitions, 546 flow. Second operand 6 states and 1448 transitions. [2022-12-13 10:55:24,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 262 transitions, 1250 flow [2022-12-13 10:55:24,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 262 transitions, 1250 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:24,506 INFO L231 Difference]: Finished difference. Result has 135 places, 201 transitions, 938 flow [2022-12-13 10:55:24,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=938, PETRI_PLACES=135, PETRI_TRANSITIONS=201} [2022-12-13 10:55:24,507 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 20 predicate places. [2022-12-13 10:55:24,507 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 201 transitions, 938 flow [2022-12-13 10:55:24,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:24,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:24,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:55:24,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1131086155, now seen corresponding path program 1 times [2022-12-13 10:55:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:24,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232894643] [2022-12-13 10:55:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:24,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:24,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:24,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232894643] [2022-12-13 10:55:24,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232894643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:24,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:24,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991140778] [2022-12-13 10:55:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:24,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:25,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 438 [2022-12-13 10:55:25,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 201 transitions, 938 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:25,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:25,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 438 [2022-12-13 10:55:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:26,380 INFO L130 PetriNetUnfolder]: 2602/9086 cut-off events. [2022-12-13 10:55:26,380 INFO L131 PetriNetUnfolder]: For 5382/5587 co-relation queries the response was YES. [2022-12-13 10:55:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20620 conditions, 9086 events. 2602/9086 cut-off events. For 5382/5587 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 81329 event pairs, 282 based on Foata normal form. 38/8359 useless extension candidates. Maximal degree in co-relation 20606. Up to 2980 conditions per place. [2022-12-13 10:55:26,416 INFO L137 encePairwiseOnDemand]: 414/438 looper letters, 145 selfloop transitions, 97 changer transitions 0/333 dead transitions. [2022-12-13 10:55:26,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 333 transitions, 2054 flow [2022-12-13 10:55:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1468 transitions. [2022-12-13 10:55:26,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558599695585997 [2022-12-13 10:55:26,422 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1468 transitions. [2022-12-13 10:55:26,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1468 transitions. [2022-12-13 10:55:26,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:26,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1468 transitions. [2022-12-13 10:55:26,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,437 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,438 INFO L175 Difference]: Start difference. First operand has 135 places, 201 transitions, 938 flow. Second operand 6 states and 1468 transitions. [2022-12-13 10:55:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 333 transitions, 2054 flow [2022-12-13 10:55:26,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 333 transitions, 2054 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:26,470 INFO L231 Difference]: Finished difference. Result has 145 places, 289 transitions, 1910 flow [2022-12-13 10:55:26,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=145, PETRI_TRANSITIONS=289} [2022-12-13 10:55:26,470 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 30 predicate places. [2022-12-13 10:55:26,471 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 289 transitions, 1910 flow [2022-12-13 10:55:26,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:26,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:26,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:55:26,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:55:26,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash 26496974, now seen corresponding path program 1 times [2022-12-13 10:55:26,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:26,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482182788] [2022-12-13 10:55:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:26,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:26,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482182788] [2022-12-13 10:55:26,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482182788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:26,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:26,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:26,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830029815] [2022-12-13 10:55:26,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:26,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:26,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:27,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 438 [2022-12-13 10:55:27,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 289 transitions, 1910 flow. Second operand has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:27,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:27,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 438 [2022-12-13 10:55:27,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:28,422 INFO L130 PetriNetUnfolder]: 2968/10745 cut-off events. [2022-12-13 10:55:28,423 INFO L131 PetriNetUnfolder]: For 14462/14828 co-relation queries the response was YES. [2022-12-13 10:55:28,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28832 conditions, 10745 events. 2968/10745 cut-off events. For 14462/14828 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 101368 event pairs, 356 based on Foata normal form. 130/9945 useless extension candidates. Maximal degree in co-relation 28813. Up to 3309 conditions per place. [2022-12-13 10:55:28,460 INFO L137 encePairwiseOnDemand]: 426/438 looper letters, 220 selfloop transitions, 71 changer transitions 0/432 dead transitions. [2022-12-13 10:55:28,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 432 transitions, 3388 flow [2022-12-13 10:55:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1518 transitions. [2022-12-13 10:55:28,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5776255707762558 [2022-12-13 10:55:28,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1518 transitions. [2022-12-13 10:55:28,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1518 transitions. [2022-12-13 10:55:28,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:28,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1518 transitions. [2022-12-13 10:55:28,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:28,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:28,468 INFO L175 Difference]: Start difference. First operand has 145 places, 289 transitions, 1910 flow. Second operand 6 states and 1518 transitions. [2022-12-13 10:55:28,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 432 transitions, 3388 flow [2022-12-13 10:55:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 432 transitions, 3388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:28,495 INFO L231 Difference]: Finished difference. Result has 155 places, 356 transitions, 2798 flow [2022-12-13 10:55:28,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2798, PETRI_PLACES=155, PETRI_TRANSITIONS=356} [2022-12-13 10:55:28,496 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 40 predicate places. [2022-12-13 10:55:28,496 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 356 transitions, 2798 flow [2022-12-13 10:55:28,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:28,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:28,497 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] [2022-12-13 10:55:28,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:55:28,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:28,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 806972337, now seen corresponding path program 1 times [2022-12-13 10:55:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:28,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372773156] [2022-12-13 10:55:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:28,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:28,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372773156] [2022-12-13 10:55:28,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372773156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:28,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:28,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829567559] [2022-12-13 10:55:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:29,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 438 [2022-12-13 10:55:29,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 356 transitions, 2798 flow. Second operand has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:29,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:29,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 438 [2022-12-13 10:55:29,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:30,971 INFO L130 PetriNetUnfolder]: 4085/12952 cut-off events. [2022-12-13 10:55:30,971 INFO L131 PetriNetUnfolder]: For 27385/28081 co-relation queries the response was YES. [2022-12-13 10:55:30,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38973 conditions, 12952 events. 4085/12952 cut-off events. For 27385/28081 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 120644 event pairs, 454 based on Foata normal form. 240/12422 useless extension candidates. Maximal degree in co-relation 38949. Up to 4942 conditions per place. [2022-12-13 10:55:31,022 INFO L137 encePairwiseOnDemand]: 417/438 looper letters, 285 selfloop transitions, 152 changer transitions 0/536 dead transitions. [2022-12-13 10:55:31,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 536 transitions, 5056 flow [2022-12-13 10:55:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1476 transitions. [2022-12-13 10:55:31,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2022-12-13 10:55:31,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1476 transitions. [2022-12-13 10:55:31,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1476 transitions. [2022-12-13 10:55:31,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:31,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1476 transitions. [2022-12-13 10:55:31,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:31,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:31,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:31,029 INFO L175 Difference]: Start difference. First operand has 155 places, 356 transitions, 2798 flow. Second operand 6 states and 1476 transitions. [2022-12-13 10:55:31,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 536 transitions, 5056 flow [2022-12-13 10:55:31,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 536 transitions, 5056 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:31,066 INFO L231 Difference]: Finished difference. Result has 165 places, 482 transitions, 4696 flow [2022-12-13 10:55:31,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4696, PETRI_PLACES=165, PETRI_TRANSITIONS=482} [2022-12-13 10:55:31,067 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 50 predicate places. [2022-12-13 10:55:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 482 transitions, 4696 flow [2022-12-13 10:55:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:31,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:31,068 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] [2022-12-13 10:55:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:55:31,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1923826987, now seen corresponding path program 1 times [2022-12-13 10:55:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:31,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516488061] [2022-12-13 10:55:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516488061] [2022-12-13 10:55:31,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516488061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:31,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:31,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207279350] [2022-12-13 10:55:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:31,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 438 [2022-12-13 10:55:31,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 482 transitions, 4696 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:31,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:31,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 438 [2022-12-13 10:55:31,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:34,232 INFO L130 PetriNetUnfolder]: 3863/12967 cut-off events. [2022-12-13 10:55:34,232 INFO L131 PetriNetUnfolder]: For 43502/44068 co-relation queries the response was YES. [2022-12-13 10:55:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43524 conditions, 12967 events. 3863/12967 cut-off events. For 43502/44068 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 122714 event pairs, 644 based on Foata normal form. 171/12409 useless extension candidates. Maximal degree in co-relation 43495. Up to 5543 conditions per place. [2022-12-13 10:55:34,290 INFO L137 encePairwiseOnDemand]: 424/438 looper letters, 414 selfloop transitions, 145 changer transitions 0/674 dead transitions. [2022-12-13 10:55:34,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 674 transitions, 7806 flow [2022-12-13 10:55:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2022-12-13 10:55:34,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654490106544902 [2022-12-13 10:55:34,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2022-12-13 10:55:34,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2022-12-13 10:55:34,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:34,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2022-12-13 10:55:34,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:34,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:34,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:34,297 INFO L175 Difference]: Start difference. First operand has 165 places, 482 transitions, 4696 flow. Second operand 6 states and 1486 transitions. [2022-12-13 10:55:34,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 674 transitions, 7806 flow [2022-12-13 10:55:34,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 674 transitions, 7806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:34,350 INFO L231 Difference]: Finished difference. Result has 174 places, 626 transitions, 7030 flow [2022-12-13 10:55:34,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=4696, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7030, PETRI_PLACES=174, PETRI_TRANSITIONS=626} [2022-12-13 10:55:34,351 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 59 predicate places. [2022-12-13 10:55:34,351 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 626 transitions, 7030 flow [2022-12-13 10:55:34,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:34,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:34,352 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] [2022-12-13 10:55:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:55:34,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -370620934, now seen corresponding path program 1 times [2022-12-13 10:55:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:34,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668252443] [2022-12-13 10:55:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:34,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:34,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668252443] [2022-12-13 10:55:34,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668252443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:34,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:34,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:55:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342458964] [2022-12-13 10:55:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:55:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:55:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:55:34,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 438 [2022-12-13 10:55:34,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 626 transitions, 7030 flow. Second operand has 6 states, 6 states have (on average 186.83333333333334) internal successors, (1121), 6 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:34,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:34,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 438 [2022-12-13 10:55:34,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:41,280 INFO L130 PetriNetUnfolder]: 13130/28851 cut-off events. [2022-12-13 10:55:41,281 INFO L131 PetriNetUnfolder]: For 73086/73540 co-relation queries the response was YES. [2022-12-13 10:55:41,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105286 conditions, 28851 events. 13130/28851 cut-off events. For 73086/73540 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 242187 event pairs, 6601 based on Foata normal form. 82/27365 useless extension candidates. Maximal degree in co-relation 105252. Up to 24480 conditions per place. [2022-12-13 10:55:41,437 INFO L137 encePairwiseOnDemand]: 400/438 looper letters, 566 selfloop transitions, 220 changer transitions 0/823 dead transitions. [2022-12-13 10:55:41,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 823 transitions, 9624 flow [2022-12-13 10:55:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:55:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:55:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1358 transitions. [2022-12-13 10:55:41,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5167427701674278 [2022-12-13 10:55:41,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1358 transitions. [2022-12-13 10:55:41,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1358 transitions. [2022-12-13 10:55:41,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:41,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1358 transitions. [2022-12-13 10:55:41,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:41,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:41,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:41,445 INFO L175 Difference]: Start difference. First operand has 174 places, 626 transitions, 7030 flow. Second operand 6 states and 1358 transitions. [2022-12-13 10:55:41,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 823 transitions, 9624 flow [2022-12-13 10:55:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 823 transitions, 9624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:41,597 INFO L231 Difference]: Finished difference. Result has 183 places, 771 transitions, 8578 flow [2022-12-13 10:55:41,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=7030, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8578, PETRI_PLACES=183, PETRI_TRANSITIONS=771} [2022-12-13 10:55:41,598 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 68 predicate places. [2022-12-13 10:55:41,598 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 771 transitions, 8578 flow [2022-12-13 10:55:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.83333333333334) internal successors, (1121), 6 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:41,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:41,599 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] [2022-12-13 10:55:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:55:41,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1061543022, now seen corresponding path program 1 times [2022-12-13 10:55:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:41,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774262250] [2022-12-13 10:55:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774262250] [2022-12-13 10:55:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774262250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:43,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:43,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 10:55:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79727766] [2022-12-13 10:55:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 10:55:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 10:55:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 10:55:47,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 438 [2022-12-13 10:55:47,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 771 transitions, 8578 flow. Second operand has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:47,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:55:47,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 438 [2022-12-13 10:55:47,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:55:53,654 INFO L130 PetriNetUnfolder]: 8898/26883 cut-off events. [2022-12-13 10:55:53,654 INFO L131 PetriNetUnfolder]: For 104778/106211 co-relation queries the response was YES. [2022-12-13 10:55:53,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103402 conditions, 26883 events. 8898/26883 cut-off events. For 104778/106211 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 280591 event pairs, 952 based on Foata normal form. 430/25829 useless extension candidates. Maximal degree in co-relation 103363. Up to 7305 conditions per place. [2022-12-13 10:55:53,832 INFO L137 encePairwiseOnDemand]: 407/438 looper letters, 1024 selfloop transitions, 279 changer transitions 0/1513 dead transitions. [2022-12-13 10:55:53,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1513 transitions, 18772 flow [2022-12-13 10:55:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 10:55:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 10:55:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4540 transitions. [2022-12-13 10:55:53,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49358556207871274 [2022-12-13 10:55:53,846 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4540 transitions. [2022-12-13 10:55:53,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4540 transitions. [2022-12-13 10:55:53,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:55:53,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4540 transitions. [2022-12-13 10:55:53,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 216.1904761904762) internal successors, (4540), 21 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:53,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:53,860 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 438.0) internal successors, (9636), 22 states have internal predecessors, (9636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:53,860 INFO L175 Difference]: Start difference. First operand has 183 places, 771 transitions, 8578 flow. Second operand 21 states and 4540 transitions. [2022-12-13 10:55:53,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 1513 transitions, 18772 flow [2022-12-13 10:55:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1513 transitions, 18472 flow, removed 150 selfloop flow, removed 0 redundant places. [2022-12-13 10:55:54,280 INFO L231 Difference]: Finished difference. Result has 222 places, 999 transitions, 12719 flow [2022-12-13 10:55:54,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=8334, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12719, PETRI_PLACES=222, PETRI_TRANSITIONS=999} [2022-12-13 10:55:54,281 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 107 predicate places. [2022-12-13 10:55:54,281 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 999 transitions, 12719 flow [2022-12-13 10:55:54,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:55:54,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:55:54,281 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] [2022-12-13 10:55:54,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:55:54,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:55:54,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:55:54,282 INFO L85 PathProgramCache]: Analyzing trace with hash 291130590, now seen corresponding path program 2 times [2022-12-13 10:55:54,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:55:54,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077601399] [2022-12-13 10:55:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:55:54,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:55:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:55:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:55:57,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:55:57,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077601399] [2022-12-13 10:55:57,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077601399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:55:57,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:55:57,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-13 10:55:57,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639043094] [2022-12-13 10:55:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:55:57,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 10:55:57,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:55:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 10:55:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-12-13 10:56:02,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 438 [2022-12-13 10:56:02,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 999 transitions, 12719 flow. Second operand has 23 states, 23 states have (on average 154.30434782608697) internal successors, (3549), 23 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) [2022-12-13 10:56:02,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:56:02,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 438 [2022-12-13 10:56:02,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:56:26,113 INFO L130 PetriNetUnfolder]: 32178/65808 cut-off events. [2022-12-13 10:56:26,113 INFO L131 PetriNetUnfolder]: For 238024/238650 co-relation queries the response was YES. [2022-12-13 10:56:26,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279586 conditions, 65808 events. 32178/65808 cut-off events. For 238024/238650 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 589410 event pairs, 13236 based on Foata normal form. 44/63513 useless extension candidates. Maximal degree in co-relation 279528. Up to 50393 conditions per place. [2022-12-13 10:56:26,693 INFO L137 encePairwiseOnDemand]: 395/438 looper letters, 1957 selfloop transitions, 428 changer transitions 0/2404 dead transitions. [2022-12-13 10:56:26,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 2404 transitions, 29349 flow [2022-12-13 10:56:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 10:56:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 10:56:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5382 transitions. [2022-12-13 10:56:26,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42371280113367976 [2022-12-13 10:56:26,701 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5382 transitions. [2022-12-13 10:56:26,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5382 transitions. [2022-12-13 10:56:26,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:56:26,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5382 transitions. [2022-12-13 10:56:26,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 185.58620689655172) internal successors, (5382), 29 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:26,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 438.0) internal successors, (13140), 30 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:26,717 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 438.0) internal successors, (13140), 30 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:26,717 INFO L175 Difference]: Start difference. First operand has 222 places, 999 transitions, 12719 flow. Second operand 29 states and 5382 transitions. [2022-12-13 10:56:26,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 2404 transitions, 29349 flow [2022-12-13 10:56:27,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 2404 transitions, 29275 flow, removed 36 selfloop flow, removed 1 redundant places. [2022-12-13 10:56:28,006 INFO L231 Difference]: Finished difference. Result has 271 places, 1417 transitions, 20431 flow [2022-12-13 10:56:28,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=12709, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20431, PETRI_PLACES=271, PETRI_TRANSITIONS=1417} [2022-12-13 10:56:28,007 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 156 predicate places. [2022-12-13 10:56:28,007 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 1417 transitions, 20431 flow [2022-12-13 10:56:28,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 154.30434782608697) internal successors, (3549), 23 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) [2022-12-13 10:56:28,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:56:28,008 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] [2022-12-13 10:56:28,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:56:28,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:56:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1420874748, now seen corresponding path program 3 times [2022-12-13 10:56:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662158820] [2022-12-13 10:56:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:56:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662158820] [2022-12-13 10:56:29,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662158820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:29,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:29,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 10:56:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332416401] [2022-12-13 10:56:29,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 10:56:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 10:56:29,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 10:56:33,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 438 [2022-12-13 10:56:33,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1417 transitions, 20431 flow. Second operand has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:33,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:56:33,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 438 [2022-12-13 10:56:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:56:50,154 INFO L130 PetriNetUnfolder]: 17673/52333 cut-off events. [2022-12-13 10:56:50,154 INFO L131 PetriNetUnfolder]: For 369684/373793 co-relation queries the response was YES. [2022-12-13 10:56:50,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252816 conditions, 52333 events. 17673/52333 cut-off events. For 369684/373793 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 605772 event pairs, 1929 based on Foata normal form. 864/50531 useless extension candidates. Maximal degree in co-relation 252735. Up to 16066 conditions per place. [2022-12-13 10:56:50,758 INFO L137 encePairwiseOnDemand]: 410/438 looper letters, 1930 selfloop transitions, 328 changer transitions 0/2505 dead transitions. [2022-12-13 10:56:50,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 2505 transitions, 40453 flow [2022-12-13 10:56:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 10:56:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 10:56:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4343 transitions. [2022-12-13 10:56:50,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49577625570776257 [2022-12-13 10:56:50,764 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4343 transitions. [2022-12-13 10:56:50,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4343 transitions. [2022-12-13 10:56:50,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:56:50,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4343 transitions. [2022-12-13 10:56:50,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 217.15) internal successors, (4343), 20 states have internal predecessors, (4343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:50,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:50,775 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 438.0) internal successors, (9198), 21 states have internal predecessors, (9198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:50,776 INFO L175 Difference]: Start difference. First operand has 271 places, 1417 transitions, 20431 flow. Second operand 20 states and 4343 transitions. [2022-12-13 10:56:50,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 2505 transitions, 40453 flow [2022-12-13 10:56:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 2505 transitions, 40256 flow, removed 92 selfloop flow, removed 2 redundant places. [2022-12-13 10:56:53,267 INFO L231 Difference]: Finished difference. Result has 304 places, 1704 transitions, 26437 flow [2022-12-13 10:56:53,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=20265, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=26437, PETRI_PLACES=304, PETRI_TRANSITIONS=1704} [2022-12-13 10:56:53,269 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 189 predicate places. [2022-12-13 10:56:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1704 transitions, 26437 flow [2022-12-13 10:56:53,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:53,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:56:53,269 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] [2022-12-13 10:56:53,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:56:53,269 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:56:53,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2057133874, now seen corresponding path program 4 times [2022-12-13 10:56:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:53,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608939692] [2022-12-13 10:56:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:56:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:53,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608939692] [2022-12-13 10:56:53,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608939692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:53,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:53,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 10:56:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167555303] [2022-12-13 10:56:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 10:56:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 10:56:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-12-13 10:56:56,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 438 [2022-12-13 10:56:56,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1704 transitions, 26437 flow. Second operand has 16 states, 16 states have (on average 201.25) internal successors, (3220), 16 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:56,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:56:56,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 438 [2022-12-13 10:56:56,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:19,592 INFO L130 PetriNetUnfolder]: 23836/66387 cut-off events. [2022-12-13 10:57:19,592 INFO L131 PetriNetUnfolder]: For 548018/553002 co-relation queries the response was YES. [2022-12-13 10:57:20,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342039 conditions, 66387 events. 23836/66387 cut-off events. For 548018/553002 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 770269 event pairs, 3538 based on Foata normal form. 748/64157 useless extension candidates. Maximal degree in co-relation 341942. Up to 27821 conditions per place. [2022-12-13 10:57:20,499 INFO L137 encePairwiseOnDemand]: 412/438 looper letters, 2346 selfloop transitions, 298 changer transitions 0/2846 dead transitions. [2022-12-13 10:57:20,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 2846 transitions, 48280 flow [2022-12-13 10:57:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 10:57:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 10:57:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4731 transitions. [2022-12-13 10:57:20,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4909713574097136 [2022-12-13 10:57:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4731 transitions. [2022-12-13 10:57:20,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4731 transitions. [2022-12-13 10:57:20,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:20,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4731 transitions. [2022-12-13 10:57:20,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 215.04545454545453) internal successors, (4731), 22 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:20,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:20,516 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 438.0) internal successors, (10074), 23 states have internal predecessors, (10074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:20,517 INFO L175 Difference]: Start difference. First operand has 304 places, 1704 transitions, 26437 flow. Second operand 22 states and 4731 transitions. [2022-12-13 10:57:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 2846 transitions, 48280 flow [2022-12-13 10:57:24,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 2846 transitions, 48010 flow, removed 130 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:24,502 INFO L231 Difference]: Finished difference. Result has 338 places, 1888 transitions, 30176 flow [2022-12-13 10:57:24,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=26245, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=30176, PETRI_PLACES=338, PETRI_TRANSITIONS=1888} [2022-12-13 10:57:24,504 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 223 predicate places. [2022-12-13 10:57:24,504 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 1888 transitions, 30176 flow [2022-12-13 10:57:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 201.25) internal successors, (3220), 16 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:24,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:24,505 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] [2022-12-13 10:57:24,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:57:24,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 10:57:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -295935782, now seen corresponding path program 5 times [2022-12-13 10:57:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165214863] [2022-12-13 10:57:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:27,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165214863] [2022-12-13 10:57:27,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165214863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:27,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:27,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-13 10:57:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23804689] [2022-12-13 10:57:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:27,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 10:57:27,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 10:57:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-12-13 10:57:33,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 438 [2022-12-13 10:57:33,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 1888 transitions, 30176 flow. Second operand has 24 states, 24 states have (on average 147.29166666666666) internal successors, (3535), 24 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:33,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:33,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 438 [2022-12-13 10:57:33,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:00:00,176 INFO L130 PetriNetUnfolder]: 134126/272131 cut-off events. [2022-12-13 11:00:00,176 INFO L131 PetriNetUnfolder]: For 1904463/1907176 co-relation queries the response was YES. [2022-12-13 11:00:04,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396671 conditions, 272131 events. 134126/272131 cut-off events. For 1904463/1907176 co-relation queries the response was YES. Maximal size of possible extension queue 2360. Compared 2952410 event pairs, 30872 based on Foata normal form. 237/263957 useless extension candidates. Maximal degree in co-relation 1396558. Up to 105770 conditions per place. [2022-12-13 11:00:05,166 INFO L137 encePairwiseOnDemand]: 379/438 looper letters, 3962 selfloop transitions, 1238 changer transitions 0/5216 dead transitions. [2022-12-13 11:00:05,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 5216 transitions, 83039 flow [2022-12-13 11:00:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 11:00:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 11:00:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6385 transitions. [2022-12-13 11:00:05,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41650358773646445 [2022-12-13 11:00:05,173 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6385 transitions. [2022-12-13 11:00:05,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6385 transitions. [2022-12-13 11:00:05,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:00:05,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6385 transitions. [2022-12-13 11:00:05,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 182.42857142857142) internal successors, (6385), 35 states have internal predecessors, (6385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:05,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 438.0) internal successors, (15768), 36 states have internal predecessors, (15768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:05,190 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 438.0) internal successors, (15768), 36 states have internal predecessors, (15768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:05,190 INFO L175 Difference]: Start difference. First operand has 338 places, 1888 transitions, 30176 flow. Second operand 35 states and 6385 transitions. [2022-12-13 11:00:05,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 5216 transitions, 83039 flow [2022-12-13 11:00:33,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 5216 transitions, 82560 flow, removed 200 selfloop flow, removed 4 redundant places. [2022-12-13 11:00:33,948 INFO L231 Difference]: Finished difference. Result has 397 places, 3032 transitions, 55072 flow [2022-12-13 11:00:33,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=29722, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=55072, PETRI_PLACES=397, PETRI_TRANSITIONS=3032} [2022-12-13 11:00:33,949 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 282 predicate places. [2022-12-13 11:00:33,949 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 3032 transitions, 55072 flow [2022-12-13 11:00:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 147.29166666666666) internal successors, (3535), 24 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:00:33,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:00:33,950 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] [2022-12-13 11:00:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:00:33,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 11:00:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:00:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash -435856416, now seen corresponding path program 6 times [2022-12-13 11:00:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:00:33,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633454761] [2022-12-13 11:00:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:00:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:00:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:00:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:00:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:00:36,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633454761] [2022-12-13 11:00:36,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633454761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:00:36,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:00:36,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-13 11:00:36,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743017118] [2022-12-13 11:00:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:00:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:00:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:00:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:00:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:00:41,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 438 [2022-12-13 11:00:41,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 3032 transitions, 55072 flow. Second operand has 23 states, 23 states have (on average 154.30434782608697) internal successors, (3549), 23 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) [2022-12-13 11:00:41,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:00:41,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 438 [2022-12-13 11:00:41,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:04:21,602 INFO L130 PetriNetUnfolder]: 136318/280621 cut-off events. [2022-12-13 11:04:21,602 INFO L131 PetriNetUnfolder]: For 2929526/2932548 co-relation queries the response was YES. [2022-12-13 11:04:26,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661800 conditions, 280621 events. 136318/280621 cut-off events. For 2929526/2932548 co-relation queries the response was YES. Maximal size of possible extension queue 2364. Compared 3083842 event pairs, 61257 based on Foata normal form. 102/272357 useless extension candidates. Maximal degree in co-relation 1661657. Up to 230637 conditions per place. [2022-12-13 11:04:27,555 INFO L137 encePairwiseOnDemand]: 379/438 looper letters, 3920 selfloop transitions, 1027 changer transitions 0/4978 dead transitions. [2022-12-13 11:04:27,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 4978 transitions, 92378 flow [2022-12-13 11:04:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 11:04:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 11:04:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5417 transitions. [2022-12-13 11:04:27,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42646827271295856 [2022-12-13 11:04:27,563 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5417 transitions. [2022-12-13 11:04:27,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5417 transitions. [2022-12-13 11:04:27,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:04:27,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5417 transitions. [2022-12-13 11:04:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 186.79310344827587) internal successors, (5417), 29 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:04:27,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 438.0) internal successors, (13140), 30 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:04:27,583 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 438.0) internal successors, (13140), 30 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:04:27,583 INFO L175 Difference]: Start difference. First operand has 397 places, 3032 transitions, 55072 flow. Second operand 29 states and 5417 transitions. [2022-12-13 11:04:27,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 4978 transitions, 92378 flow