./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/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 adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --- 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 11:37:55,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:37:55,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:37:55,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:37:55,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:37:55,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:37:55,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:37:55,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:37:55,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:37:55,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:37:55,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:37:55,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:37:55,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:37:55,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:37:55,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:37:55,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:37:55,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:37:55,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:37:55,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:37:55,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:37:55,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:37:55,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:37:55,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:37:55,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:37:55,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:37:55,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:37:55,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:37:55,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:37:55,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:37:55,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:37:55,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:37:55,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:37:55,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:37:55,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:37:55,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:37:55,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:37:55,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:37:55,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:37:55,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:37:55,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:37:55,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:37:55,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 11:37:55,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:37:55,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:37:55,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:37:55,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:37:55,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:37:55,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:37:55,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:37:55,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:37:55,610 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:37:55,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:37:55,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:37:55,610 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:37:55,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:37:55,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:37:55,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:37:55,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:37:55,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:37:55,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:37:55,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:55,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:37:55,613 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:37:55,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:37:55,614 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:37:55,614 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 [2022-12-13 11:37:55,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:37:55,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:37:55,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:37:55,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:37:55,839 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:37:55,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-12-13 11:37:58,438 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:37:58,647 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:37:58,648 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-12-13 11:37:58,658 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/data/a49c58991/1cfc2d8e9063419884a9f211e788c806/FLAGa978d81cb [2022-12-13 11:37:59,002 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/data/a49c58991/1cfc2d8e9063419884a9f211e788c806 [2022-12-13 11:37:59,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:37:59,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:37:59,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:59,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:37:59,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:37:59,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e691a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59, skipping insertion in model container [2022-12-13 11:37:59,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:37:59,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:37:59,294 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-12-13 11:37:59,297 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-12-13 11:37:59,299 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-12-13 11:37:59,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:59,310 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:37:59,338 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-12-13 11:37:59,340 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-12-13 11:37:59,342 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_b7210ff3-a2b1-400d-8fea-afc38f08faf8/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-12-13 11:37:59,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:59,364 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:37:59,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59 WrapperNode [2022-12-13 11:37:59,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:59,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:59,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:37:59,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:37:59,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,399 INFO L138 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 213 [2022-12-13 11:37:59,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:59,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:37:59,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:37:59,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:37:59,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:37:59,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:37:59,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:37:59,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:37:59,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (1/1) ... [2022-12-13 11:37:59,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:59,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:59,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:37:59,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7210ff3-a2b1-400d-8fea-afc38f08faf8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:37:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:37:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 11:37:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 11:37:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:37:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:37:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:37:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:37:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:37:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:37:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:37:59,484 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 11:37:59,585 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:37:59,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:37:59,908 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:38:00,056 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:38:00,056 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:38:00,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:38:00 BoogieIcfgContainer [2022-12-13 11:38:00,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:38:00,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:38:00,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:38:00,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:38:00,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:37:59" (1/3) ... [2022-12-13 11:38:00,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b801af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:38:00, skipping insertion in model container [2022-12-13 11:38:00,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:59" (2/3) ... [2022-12-13 11:38:00,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b801af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:38:00, skipping insertion in model container [2022-12-13 11:38:00,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:38:00" (3/3) ... [2022-12-13 11:38:00,068 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2022-12-13 11:38:00,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:38:00,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:38:00,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 11:38:00,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:38:00,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:38:00,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,227 INFO L130 PetriNetUnfolder]: 14/181 cut-off events. [2022-12-13 11:38:00,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:38:00,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 14/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2022-12-13 11:38:00,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:38:00,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 170 transitions, 345 flow [2022-12-13 11:38:00,272 INFO L130 PetriNetUnfolder]: 14/181 cut-off events. [2022-12-13 11:38:00,272 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:38:00,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 14/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2022-12-13 11:38:00,275 INFO L119 LiptonReduction]: Number of co-enabled transitions 3836 [2022-12-13 11:38:09,260 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 116 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:38:17,771 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:38:20,495 INFO L134 LiptonReduction]: Checked pairs total: 4199 [2022-12-13 11:38:20,495 INFO L136 LiptonReduction]: Total number of compositions: 204 [2022-12-13 11:38:20,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:38:20,509 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;@1f1d44bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:38:20,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 11:38:20,511 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 11:38:20,511 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:38:20,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:20,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:38:20,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-12-13 11:38:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 29962423, now seen corresponding path program 1 times [2022-12-13 11:38:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:20,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973437824] [2022-12-13 11:38:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:20,642 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 11:38:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:20,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973437824] [2022-12-13 11:38:20,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973437824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:38:20,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:38:20,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:38:20,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124137468] [2022-12-13 11:38:20,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:38:20,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:38:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:38:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:38:20,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 374 [2022-12-13 11:38:20,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 73 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 11:38:20,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:20,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 374 [2022-12-13 11:38:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:20,739 INFO L130 PetriNetUnfolder]: 24/51 cut-off events. [2022-12-13 11:38:20,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:38:20,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 51 events. 24/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 12 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 88. Up to 48 conditions per place. [2022-12-13 11:38:20,741 INFO L137 encePairwiseOnDemand]: 355/374 looper letters, 14 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2022-12-13 11:38:20,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 15 transitions, 63 flow [2022-12-13 11:38:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:38:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:38:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 317 transitions. [2022-12-13 11:38:20,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42379679144385024 [2022-12-13 11:38:20,755 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 317 transitions. [2022-12-13 11:38:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 317 transitions. [2022-12-13 11:38:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:20,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 317 transitions. [2022-12-13 11:38:20,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 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 11:38:20,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 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 11:38:20,767 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 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 11:38:20,769 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 73 flow. Second operand 2 states and 317 transitions. [2022-12-13 11:38:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 15 transitions, 63 flow [2022-12-13 11:38:20,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:38:20,773 INFO L231 Difference]: Finished difference. Result has 15 places, 15 transitions, 35 flow [2022-12-13 11:38:20,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=35, PETRI_PLACES=15, PETRI_TRANSITIONS=15} [2022-12-13 11:38:20,778 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, -16 predicate places. [2022-12-13 11:38:20,778 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 15 transitions, 35 flow [2022-12-13 11:38:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 11:38:20,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:20,779 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:38:20,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:38:20,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-12-13 11:38:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1270794419, now seen corresponding path program 1 times [2022-12-13 11:38:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108837724] [2022-12-13 11:38:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:38:20,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:38:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:38:20,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:38:20,818 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:38:20,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-12-13 11:38:20,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-12-13 11:38:20,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-12-13 11:38:20,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-12-13 11:38:20,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-12-13 11:38:20,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-12-13 11:38:20,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-12-13 11:38:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:38:20,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 11:38:20,827 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:38:20,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:38:20,876 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:38:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,921 INFO L130 PetriNetUnfolder]: 27/332 cut-off events. [2022-12-13 11:38:20,922 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:38:20,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 332 events. 27/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1061 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 287. Up to 6 conditions per place. [2022-12-13 11:38:20,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:38:20,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 308 transitions, 628 flow [2022-12-13 11:38:20,965 INFO L130 PetriNetUnfolder]: 27/332 cut-off events. [2022-12-13 11:38:20,965 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:38:20,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 332 events. 27/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1061 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 287. Up to 6 conditions per place. [2022-12-13 11:38:20,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 45484 [2022-12-13 11:38:35,324 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 118 DAG size of output: 103 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:38:49,322 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 125 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:38:58,075 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 116 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:39:06,384 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:39:08,837 INFO L134 LiptonReduction]: Checked pairs total: 134156 [2022-12-13 11:39:08,837 INFO L136 LiptonReduction]: Total number of compositions: 260 [2022-12-13 11:39:08,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:39:08,839 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;@1f1d44bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:39:08,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-12-13 11:39:08,840 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 11:39:08,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:39:08,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:39:08,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:39:08,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-12-13 11:39:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash 51835461, now seen corresponding path program 1 times [2022-12-13 11:39:08,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:08,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497808282] [2022-12-13 11:39:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:08,860 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 11:39:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:08,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497808282] [2022-12-13 11:39:08,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497808282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:39:08,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:39:08,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:39:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5979882] [2022-12-13 11:39:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:39:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:39:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:39:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:39:08,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 568 [2022-12-13 11:39:08,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 0 states have call successors, (0), 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 11:39:08,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:39:08,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 568 [2022-12-13 11:39:08,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:39:09,311 INFO L130 PetriNetUnfolder]: 1231/3172 cut-off events. [2022-12-13 11:39:09,311 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 11:39:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 3172 events. 1231/3172 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 25516 event pairs, 935 based on Foata normal form. 148/2947 useless extension candidates. Maximal degree in co-relation 2080. Up to 1918 conditions per place. [2022-12-13 11:39:09,322 INFO L137 encePairwiseOnDemand]: 543/568 looper letters, 46 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2022-12-13 11:39:09,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 306 flow [2022-12-13 11:39:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:39:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:39:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 579 transitions. [2022-12-13 11:39:09,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5096830985915493 [2022-12-13 11:39:09,325 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 579 transitions. [2022-12-13 11:39:09,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 579 transitions. [2022-12-13 11:39:09,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:39:09,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 579 transitions. [2022-12-13 11:39:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 0 states have call successors, (0), 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 11:39:09,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 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 11:39:09,329 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 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 11:39:09,330 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 264 flow. Second operand 2 states and 579 transitions. [2022-12-13 11:39:09,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 101 transitions, 306 flow [2022-12-13 11:39:09,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 304 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 11:39:09,331 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 212 flow [2022-12-13 11:39:09,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2022-12-13 11:39:09,332 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -20 predicate places. [2022-12-13 11:39:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 212 flow [2022-12-13 11:39:09,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 0 states have call successors, (0), 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 11:39:09,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:39:09,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:39:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:39:09,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-12-13 11:39:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1725687705, now seen corresponding path program 1 times [2022-12-13 11:39:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769315469] [2022-12-13 11:39:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:09,367 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 11:39:09,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:09,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769315469] [2022-12-13 11:39:09,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769315469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:39:09,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:39:09,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:39:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555310958] [2022-12-13 11:39:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:39:09,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:39:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:39:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:39:09,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 568 [2022-12-13 11:39:09,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 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 11:39:09,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:39:09,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 568 [2022-12-13 11:39:09,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:39:10,090 INFO L130 PetriNetUnfolder]: 2014/4693 cut-off events. [2022-12-13 11:39:10,090 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-13 11:39:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7938 conditions, 4693 events. 2014/4693 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 38621 event pairs, 653 based on Foata normal form. 0/4212 useless extension candidates. Maximal degree in co-relation 7933. Up to 2325 conditions per place. [2022-12-13 11:39:10,108 INFO L137 encePairwiseOnDemand]: 560/568 looper letters, 98 selfloop transitions, 6 changer transitions 0/151 dead transitions. [2022-12-13 11:39:10,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 525 flow [2022-12-13 11:39:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:39:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:39:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 844 transitions. [2022-12-13 11:39:10,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4953051643192488 [2022-12-13 11:39:10,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 844 transitions. [2022-12-13 11:39:10,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 844 transitions. [2022-12-13 11:39:10,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:39:10,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 844 transitions. [2022-12-13 11:39:10,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 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 11:39:10,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 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 11:39:10,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 568.0) internal successors, (2272), 4 states have internal predecessors, (2272), 0 states have call successors, (0), 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 11:39:10,115 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 212 flow. Second operand 3 states and 844 transitions. [2022-12-13 11:39:10,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 525 flow [2022-12-13 11:39:10,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 525 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:39:10,117 INFO L231 Difference]: Finished difference. Result has 103 places, 107 transitions, 264 flow [2022-12-13 11:39:10,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=568, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=103, PETRI_TRANSITIONS=107} [2022-12-13 11:39:10,118 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2022-12-13 11:39:10,118 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 107 transitions, 264 flow [2022-12-13 11:39:10,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 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 11:39:10,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:39:10,119 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 11:39:10,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:39:10,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-12-13 11:39:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash -514030539, now seen corresponding path program 1 times [2022-12-13 11:39:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:10,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138313520] [2022-12-13 11:39:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:39:10,134 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:39:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:39:10,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:39:10,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:39:10,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-12-13 11:39:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-12-13 11:39:10,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-12-13 11:39:10,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-12-13 11:39:10,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-12-13 11:39:10,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-12-13 11:39:10,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-12-13 11:39:10,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-12-13 11:39:10,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-12-13 11:39:10,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-12-13 11:39:10,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-12-13 11:39:10,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-12-13 11:39:10,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-12-13 11:39:10,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-12-13 11:39:10,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-12-13 11:39:10,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-12-13 11:39:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:39:10,156 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 11:39:10,157 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:39:10,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 11:39:10,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:39:10,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,304 INFO L130 PetriNetUnfolder]: 40/483 cut-off events. [2022-12-13 11:39:10,304 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 11:39:10,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 483 events. 40/483 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1970 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 424. Up to 8 conditions per place. [2022-12-13 11:39:10,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:39:10,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 446 transitions, 913 flow [2022-12-13 11:39:10,421 INFO L130 PetriNetUnfolder]: 40/483 cut-off events. [2022-12-13 11:39:10,421 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 11:39:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 483 events. 40/483 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1970 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 424. Up to 8 conditions per place. [2022-12-13 11:39:10,464 INFO L119 LiptonReduction]: Number of co-enabled transitions 124944 [2022-12-13 11:39:35,830 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 125 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:39:43,730 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 102 DAG size of output: 95 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:40:07,362 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 127 DAG size of output: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:40:23,683 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:40:27,050 INFO L134 LiptonReduction]: Checked pairs total: 384325 [2022-12-13 11:40:27,050 INFO L136 LiptonReduction]: Total number of compositions: 383 [2022-12-13 11:40:27,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:27,051 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;@1f1d44bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:27,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-12-13 11:40:27,052 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 11:40:27,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:40:27,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:27,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:40:27,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-12-13 11:40:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash 81176840, now seen corresponding path program 1 times [2022-12-13 11:40:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:27,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656447025] [2022-12-13 11:40:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,067 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 11:40:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:27,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656447025] [2022-12-13 11:40:27,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656447025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:27,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:27,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:40:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168582371] [2022-12-13 11:40:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:27,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:40:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:40:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:40:27,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 829 [2022-12-13 11:40:27,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 186 transitions, 393 flow. Second operand has 2 states, 2 states have (on average 368.0) internal successors, (736), 2 states have internal predecessors, (736), 0 states have call successors, (0), 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 11:40:27,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:27,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 829 [2022-12-13 11:40:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:32,601 INFO L130 PetriNetUnfolder]: 31003/63473 cut-off events. [2022-12-13 11:40:32,601 INFO L131 PetriNetUnfolder]: For 1837/1837 co-relation queries the response was YES. [2022-12-13 11:40:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106174 conditions, 63473 events. 31003/63473 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 2200. Compared 701088 event pairs, 23803 based on Foata normal form. 2446/57525 useless extension candidates. Maximal degree in co-relation 11954. Up to 41376 conditions per place. [2022-12-13 11:40:32,957 INFO L137 encePairwiseOnDemand]: 792/829 looper letters, 65 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2022-12-13 11:40:32,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 149 transitions, 449 flow [2022-12-13 11:40:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:40:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:40:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 834 transitions. [2022-12-13 11:40:32,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503015681544029 [2022-12-13 11:40:32,961 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 834 transitions. [2022-12-13 11:40:32,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 834 transitions. [2022-12-13 11:40:32,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:32,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 834 transitions. [2022-12-13 11:40:32,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 417.0) internal successors, (834), 2 states have internal predecessors, (834), 0 states have call successors, (0), 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 11:40:32,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 829.0) internal successors, (2487), 3 states have internal predecessors, (2487), 0 states have call successors, (0), 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 11:40:32,966 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 829.0) internal successors, (2487), 3 states have internal predecessors, (2487), 0 states have call successors, (0), 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 11:40:32,967 INFO L175 Difference]: Start difference. First operand has 175 places, 186 transitions, 393 flow. Second operand 2 states and 834 transitions. [2022-12-13 11:40:32,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 149 transitions, 449 flow [2022-12-13 11:40:32,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 443 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 11:40:32,971 INFO L231 Difference]: Finished difference. Result has 145 places, 149 transitions, 313 flow [2022-12-13 11:40:32,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=313, PETRI_PLACES=145, PETRI_TRANSITIONS=149} [2022-12-13 11:40:32,972 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -30 predicate places. [2022-12-13 11:40:32,972 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 313 flow [2022-12-13 11:40:32,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 368.0) internal successors, (736), 2 states have internal predecessors, (736), 0 states have call successors, (0), 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 11:40:32,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:32,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:40:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:40:32,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-12-13 11:40:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 701596330, now seen corresponding path program 1 times [2022-12-13 11:40:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:32,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326653529] [2022-12-13 11:40:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:32,996 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 11:40:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:32,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326653529] [2022-12-13 11:40:32,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326653529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:32,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:32,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:40:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975095748] [2022-12-13 11:40:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:32,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:32,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:33,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 829 [2022-12-13 11:40:33,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 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 11:40:33,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:33,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 829 [2022-12-13 11:40:33,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:42,820 INFO L130 PetriNetUnfolder]: 64862/124506 cut-off events. [2022-12-13 11:40:42,820 INFO L131 PetriNetUnfolder]: For 1400/1400 co-relation queries the response was YES. [2022-12-13 11:40:43,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213490 conditions, 124506 events. 64862/124506 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 4163. Compared 1406469 event pairs, 23380 based on Foata normal form. 0/109690 useless extension candidates. Maximal degree in co-relation 213484. Up to 59232 conditions per place. [2022-12-13 11:40:43,411 INFO L137 encePairwiseOnDemand]: 817/829 looper letters, 136 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2022-12-13 11:40:43,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 219 transitions, 753 flow [2022-12-13 11:40:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2022-12-13 11:40:43,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.486529955770004 [2022-12-13 11:40:43,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2022-12-13 11:40:43,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2022-12-13 11:40:43,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:43,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2022-12-13 11:40:43,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 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 11:40:43,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 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 11:40:43,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 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 11:40:43,420 INFO L175 Difference]: Start difference. First operand has 145 places, 149 transitions, 313 flow. Second operand 3 states and 1210 transitions. [2022-12-13 11:40:43,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 219 transitions, 753 flow [2022-12-13 11:40:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 219 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:40:43,423 INFO L231 Difference]: Finished difference. Result has 149 places, 158 transitions, 391 flow [2022-12-13 11:40:43,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=149, PETRI_TRANSITIONS=158} [2022-12-13 11:40:43,424 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -26 predicate places. [2022-12-13 11:40:43,424 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 158 transitions, 391 flow [2022-12-13 11:40:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 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 11:40:43,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:43,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:40:43,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-12-13 11:40:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -528484650, now seen corresponding path program 1 times [2022-12-13 11:40:43,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:43,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197696824] [2022-12-13 11:40:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:43,628 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 11:40:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:43,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197696824] [2022-12-13 11:40:43,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197696824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:43,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:43,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:40:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512544033] [2022-12-13 11:40:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:43,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:40:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:40:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:40:43,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 829 [2022-12-13 11:40:43,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 158 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 305.6666666666667) internal successors, (1834), 6 states have internal predecessors, (1834), 0 states have call successors, (0), 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 11:40:43,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:43,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 829 [2022-12-13 11:40:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:29,549 INFO L130 PetriNetUnfolder]: 404011/598172 cut-off events. [2022-12-13 11:41:29,549 INFO L131 PetriNetUnfolder]: For 25915/25915 co-relation queries the response was YES. [2022-12-13 11:41:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178801 conditions, 598172 events. 404011/598172 cut-off events. For 25915/25915 co-relation queries the response was YES. Maximal size of possible extension queue 15682. Compared 5632819 event pairs, 269203 based on Foata normal form. 0/548824 useless extension candidates. Maximal degree in co-relation 1178793. Up to 469120 conditions per place. [2022-12-13 11:41:32,879 INFO L137 encePairwiseOnDemand]: 783/829 looper letters, 307 selfloop transitions, 126 changer transitions 0/477 dead transitions. [2022-12-13 11:41:32,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 477 transitions, 1959 flow [2022-12-13 11:41:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:41:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:41:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2252 transitions. [2022-12-13 11:41:32,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4527543224768798 [2022-12-13 11:41:32,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2252 transitions. [2022-12-13 11:41:32,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2252 transitions. [2022-12-13 11:41:32,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:32,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2252 transitions. [2022-12-13 11:41:32,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 375.3333333333333) internal successors, (2252), 6 states have internal predecessors, (2252), 0 states have call successors, (0), 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 11:41:32,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 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 11:41:32,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 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 11:41:32,899 INFO L175 Difference]: Start difference. First operand has 149 places, 158 transitions, 391 flow. Second operand 6 states and 2252 transitions. [2022-12-13 11:41:32,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 477 transitions, 1959 flow [2022-12-13 11:41:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 477 transitions, 1933 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:41:33,142 INFO L231 Difference]: Finished difference. Result has 156 places, 295 transitions, 1208 flow [2022-12-13 11:41:33,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1208, PETRI_PLACES=156, PETRI_TRANSITIONS=295} [2022-12-13 11:41:33,143 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -19 predicate places. [2022-12-13 11:41:33,143 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 295 transitions, 1208 flow [2022-12-13 11:41:33,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.6666666666667) internal successors, (1834), 6 states have internal predecessors, (1834), 0 states have call successors, (0), 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 11:41:33,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:33,144 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 11:41:33,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:41:33,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-12-13 11:41:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:33,145 INFO L85 PathProgramCache]: Analyzing trace with hash 818551472, now seen corresponding path program 1 times [2022-12-13 11:41:33,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:33,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208584373] [2022-12-13 11:41:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:41:33,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:41:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:41:33,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:41:33,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:41:33,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2022-12-13 11:41:33,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2022-12-13 11:41:33,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2022-12-13 11:41:33,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2022-12-13 11:41:33,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2022-12-13 11:41:33,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2022-12-13 11:41:33,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2022-12-13 11:41:33,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:41:33,177 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 11:41:33,178 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:41:33,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 11:41:33,239 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:41:33,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,361 INFO L130 PetriNetUnfolder]: 53/634 cut-off events. [2022-12-13 11:41:33,361 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 11:41:33,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 634 events. 53/634 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2975 event pairs, 0 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 561. Up to 10 conditions per place. [2022-12-13 11:41:33,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:41:33,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 584 transitions, 1200 flow [2022-12-13 11:41:33,494 INFO L130 PetriNetUnfolder]: 53/634 cut-off events. [2022-12-13 11:41:33,495 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 11:41:33,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 634 events. 53/634 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2975 event pairs, 0 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 561. Up to 10 conditions per place. [2022-12-13 11:41:33,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 242216 [2022-12-13 11:41:49,543 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 126 DAG size of output: 111 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:41:57,874 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 107 DAG size of output: 100 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:12,341 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 114 DAG size of output: 111 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:21,142 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 130 DAG size of output: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:37,629 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 130 DAG size of output: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:46,482 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 116 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:42:54,159 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 135 DAG size of output: 122 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:43:09,567 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 11:43:12,615 INFO L134 LiptonReduction]: Checked pairs total: 743954 [2022-12-13 11:43:12,615 INFO L136 LiptonReduction]: Total number of compositions: 497 [2022-12-13 11:43:12,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:43:12,617 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;@1f1d44bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:43:12,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-12-13 11:43:12,618 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 11:43:12,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:43:12,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:43:12,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:43:12,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2022-12-13 11:43:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash 118889175, now seen corresponding path program 1 times [2022-12-13 11:43:12,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:12,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642382900] [2022-12-13 11:43:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:12,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:12,628 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 11:43:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642382900] [2022-12-13 11:43:12,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642382900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:12,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:12,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:43:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422252152] [2022-12-13 11:43:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:43:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:43:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:43:12,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1081 [2022-12-13 11:43:12,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 247 transitions, 526 flow. Second operand has 2 states, 2 states have (on average 480.0) internal successors, (960), 2 states have internal predecessors, (960), 0 states have call successors, (0), 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 11:43:12,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:43:12,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1081 [2022-12-13 11:43:12,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand