./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- 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 15:50:24,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:50:24,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:50:24,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:50:24,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:50:24,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:50:24,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:50:24,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:50:24,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:50:24,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:50:24,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:50:24,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:50:24,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:50:24,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:50:24,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:50:24,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:50:24,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:50:24,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:50:24,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:50:24,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:50:24,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:50:24,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:50:24,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:50:24,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:50:24,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:50:24,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:50:24,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:50:24,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:50:24,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:50:24,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:50:24,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:50:24,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:50:24,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:50:24,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:50:24,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:50:24,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:50:24,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:50:24,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:50:24,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:50:24,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:50:24,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:50:24,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 15:50:24,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:50:24,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:50:24,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:50:24,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:50:24,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:50:24,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:50:24,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:50:24,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:50:24,165 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:50:24,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:50:24,165 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:50:24,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:50:24,167 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 15:50:24,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:50:24,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:50:24,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:50:24,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:50:24,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:50:24,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:50:24,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:50:24,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:50:24,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:50:24,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:50:24,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:50:24,169 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:50:24,170 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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2022-12-13 15:50:24,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:50:24,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:50:24,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:50:24,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:50:24,379 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:50:24,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2022-12-13 15:50:27,018 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:50:27,170 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:50:27,170 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2022-12-13 15:50:27,180 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/data/573625bda/6fe050c7bed24976bc5dc5b901bfa4d1/FLAG0442c19f9 [2022-12-13 15:50:27,190 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/data/573625bda/6fe050c7bed24976bc5dc5b901bfa4d1 [2022-12-13 15:50:27,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:50:27,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:50:27,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:50:27,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:50:27,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:50:27,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e848a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27, skipping insertion in model container [2022-12-13 15:50:27,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:50:27,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:50:27,359 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:50:27,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:50:27,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:50:27,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:50:27,445 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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i[30633,30646] [2022-12-13 15:50:27,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:50:27,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:50:27,456 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:50:27,467 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:50:27,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:50:27,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:50:27,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:50:27,481 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_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i[30633,30646] [2022-12-13 15:50:27,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:50:27,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:50:27,503 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:50:27,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27 WrapperNode [2022-12-13 15:50:27,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:50:27,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:50:27,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:50:27,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:50:27,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,529 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-12-13 15:50:27,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:50:27,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:50:27,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:50:27,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:50:27,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:50:27,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:50:27,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:50:27,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:50:27,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (1/1) ... [2022-12-13 15:50:27,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:50:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:27,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:50:27,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c96bbf-94c4-4e84-b96c-9cb927c1fc3f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 15:50:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:50:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:50:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:50:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:50:27,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:50:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:50:27,604 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 15:50:27,695 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:50:27,697 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:50:27,787 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:50:27,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:50:27,808 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:50:27,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:50:27 BoogieIcfgContainer [2022-12-13 15:50:27,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:50:27,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:50:27,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:50:27,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:50:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:50:27" (1/3) ... [2022-12-13 15:50:27,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72483ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:50:27, skipping insertion in model container [2022-12-13 15:50:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:50:27" (2/3) ... [2022-12-13 15:50:27,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72483ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:50:27, skipping insertion in model container [2022-12-13 15:50:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:50:27" (3/3) ... [2022-12-13 15:50:27,817 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2022-12-13 15:50:27,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:50:27,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:50:27,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-13 15:50:27,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:50:27,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:27,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,910 INFO L130 PetriNetUnfolder]: 2/59 cut-off events. [2022-12-13 15:50:27,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:27,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 33. Up to 4 conditions per place. [2022-12-13 15:50:27,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:27,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 101 flow [2022-12-13 15:50:27,941 INFO L130 PetriNetUnfolder]: 2/59 cut-off events. [2022-12-13 15:50:27,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:27,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 33. Up to 4 conditions per place. [2022-12-13 15:50:27,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2022-12-13 15:50:28,826 INFO L134 LiptonReduction]: Checked pairs total: 272 [2022-12-13 15:50:28,826 INFO L136 LiptonReduction]: Total number of compositions: 45 [2022-12-13 15:50:28,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:28,843 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:28,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 15:50:28,844 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:28,844 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:28,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:28,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:28,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:50:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:28,849 INFO L85 PathProgramCache]: Analyzing trace with hash 217, now seen corresponding path program 1 times [2022-12-13 15:50:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:28,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945216628] [2022-12-13 15:50:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:28,929 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 15:50:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945216628] [2022-12-13 15:50:28,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945216628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:28,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:28,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989217228] [2022-12-13 15:50:28,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:28,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:28,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:28,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 93 [2022-12-13 15:50:28,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 10 transitions, 25 flow. Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 15:50:28,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:28,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 93 [2022-12-13 15:50:28,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:28,971 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-13 15:50:28,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:28,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2022-12-13 15:50:28,972 INFO L137 encePairwiseOnDemand]: 89/93 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2022-12-13 15:50:28,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2022-12-13 15:50:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2022-12-13 15:50:28,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2022-12-13 15:50:28,981 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 91 transitions. [2022-12-13 15:50:28,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 91 transitions. [2022-12-13 15:50:28,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:28,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 91 transitions. [2022-12-13 15:50:28,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 15:50:28,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 15:50:28,988 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 15:50:28,990 INFO L175 Difference]: Start difference. First operand has 13 places, 10 transitions, 25 flow. Second operand 2 states and 91 transitions. [2022-12-13 15:50:28,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2022-12-13 15:50:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:28,993 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2022-12-13 15:50:28,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2022-12-13 15:50:28,997 INFO L288 CegarLoopForPetriNet]: 13 programPoint places, -3 predicate places. [2022-12-13 15:50:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2022-12-13 15:50:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 15:50:28,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:28,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 15:50:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:50:28,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:50:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2109424711, now seen corresponding path program 1 times [2022-12-13 15:50:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500455785] [2022-12-13 15:50:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:29,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:29,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:29,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:29,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-12-13 15:50:29,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-12-13 15:50:29,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-12-13 15:50:29,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-12-13 15:50:29,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-12-13 15:50:29,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-12-13 15:50:29,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:50:29,046 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:29,048 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:29,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 15:50:29,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:29,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,072 INFO L130 PetriNetUnfolder]: 3/84 cut-off events. [2022-12-13 15:50:29,072 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:50:29,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 3/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2022-12-13 15:50:29,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,073 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:29,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 132 flow [2022-12-13 15:50:29,083 INFO L130 PetriNetUnfolder]: 3/84 cut-off events. [2022-12-13 15:50:29,083 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:50:29,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 3/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2022-12-13 15:50:29,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 880 [2022-12-13 15:50:29,762 INFO L134 LiptonReduction]: Checked pairs total: 1441 [2022-12-13 15:50:29,762 INFO L136 LiptonReduction]: Total number of compositions: 54 [2022-12-13 15:50:29,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:29,764 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:29,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 15:50:29,765 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:29,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:29,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:29,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:29,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:50:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2022-12-13 15:50:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:29,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047762061] [2022-12-13 15:50:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:29,775 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 15:50:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047762061] [2022-12-13 15:50:29,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047762061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:29,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:29,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671613875] [2022-12-13 15:50:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:29,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:29,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 114 [2022-12-13 15:50:29,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 15:50:29,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:29,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 114 [2022-12-13 15:50:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:29,791 INFO L130 PetriNetUnfolder]: 20/57 cut-off events. [2022-12-13 15:50:29,791 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 15:50:29,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 20 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2022-12-13 15:50:29,792 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2022-12-13 15:50:29,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2022-12-13 15:50:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2022-12-13 15:50:29,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2022-12-13 15:50:29,793 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 110 transitions. [2022-12-13 15:50:29,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 110 transitions. [2022-12-13 15:50:29,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:29,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 110 transitions. [2022-12-13 15:50:29,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 15:50:29,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 15:50:29,795 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 15:50:29,795 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 2 states and 110 transitions. [2022-12-13 15:50:29,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2022-12-13 15:50:29,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:29,796 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2022-12-13 15:50:29,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2022-12-13 15:50:29,796 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -5 predicate places. [2022-12-13 15:50:29,797 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2022-12-13 15:50:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 15:50:29,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:29,797 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 15:50:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:50:29,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 15:50:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1259558217, now seen corresponding path program 1 times [2022-12-13 15:50:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:29,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865429306] [2022-12-13 15:50:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:29,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:29,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:29,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-12-13 15:50:29,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-12-13 15:50:29,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-12-13 15:50:29,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-12-13 15:50:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:50:29,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:29,824 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:29,824 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 15:50:29,833 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:29,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,845 INFO L130 PetriNetUnfolder]: 4/109 cut-off events. [2022-12-13 15:50:29,845 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 15:50:29,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 88. Up to 8 conditions per place. [2022-12-13 15:50:29,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:29,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,846 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 165 flow [2022-12-13 15:50:29,856 INFO L130 PetriNetUnfolder]: 4/109 cut-off events. [2022-12-13 15:50:29,856 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 15:50:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 88. Up to 8 conditions per place. [2022-12-13 15:50:29,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 1716 [2022-12-13 15:50:30,556 INFO L134 LiptonReduction]: Checked pairs total: 2923 [2022-12-13 15:50:30,556 INFO L136 LiptonReduction]: Total number of compositions: 60 [2022-12-13 15:50:30,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:30,558 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:30,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 15:50:30,559 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:30,559 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:30,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:30,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:30,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 15:50:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash 488, now seen corresponding path program 1 times [2022-12-13 15:50:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265052327] [2022-12-13 15:50:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:30,566 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 15:50:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:30,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265052327] [2022-12-13 15:50:30,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265052327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:30,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:30,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:30,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880501392] [2022-12-13 15:50:30,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:30,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:30,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:30,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 132 [2022-12-13 15:50:30,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 65 flow. Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 15:50:30,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:30,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 132 [2022-12-13 15:50:30,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:30,600 INFO L130 PetriNetUnfolder]: 110/225 cut-off events. [2022-12-13 15:50:30,600 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-12-13 15:50:30,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 896 event pairs, 110 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2022-12-13 15:50:30,602 INFO L137 encePairwiseOnDemand]: 124/132 looper letters, 11 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2022-12-13 15:50:30,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2022-12-13 15:50:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 129 transitions. [2022-12-13 15:50:30,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2022-12-13 15:50:30,603 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 129 transitions. [2022-12-13 15:50:30,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 129 transitions. [2022-12-13 15:50:30,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:30,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 129 transitions. [2022-12-13 15:50:30,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 15:50:30,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 15:50:30,604 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 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 15:50:30,605 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 65 flow. Second operand 2 states and 129 transitions. [2022-12-13 15:50:30,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2022-12-13 15:50:30,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:30,605 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 43 flow [2022-12-13 15:50:30,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2022-12-13 15:50:30,606 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 15:50:30,606 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 43 flow [2022-12-13 15:50:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 15:50:30,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:30,606 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 15:50:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:50:30,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-13 15:50:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash -883358431, now seen corresponding path program 1 times [2022-12-13 15:50:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:30,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673498019] [2022-12-13 15:50:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:30,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:30,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:30,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-12-13 15:50:30,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-12-13 15:50:30,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-12-13 15:50:30,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-12-13 15:50:30,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:50:30,633 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:30,633 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:30,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 15:50:30,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:30,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,655 INFO L130 PetriNetUnfolder]: 5/134 cut-off events. [2022-12-13 15:50:30,655 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 15:50:30,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 134 events. 5/134 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 239 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2022-12-13 15:50:30,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:30,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 200 flow [2022-12-13 15:50:30,665 INFO L130 PetriNetUnfolder]: 5/134 cut-off events. [2022-12-13 15:50:30,665 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 15:50:30,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 134 events. 5/134 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 239 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2022-12-13 15:50:30,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 2816 [2022-12-13 15:50:31,593 INFO L134 LiptonReduction]: Checked pairs total: 5237 [2022-12-13 15:50:31,593 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-12-13 15:50:31,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:31,596 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:31,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 15:50:31,597 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:31,597 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:31,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:31,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:31,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 15:50:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2022-12-13 15:50:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:31,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325083356] [2022-12-13 15:50:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:31,607 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 15:50:31,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:31,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325083356] [2022-12-13 15:50:31,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325083356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:31,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:31,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:31,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630259105] [2022-12-13 15:50:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:31,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:31,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 159 [2022-12-13 15:50:31,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 15:50:31,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:31,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 159 [2022-12-13 15:50:31,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:31,685 INFO L130 PetriNetUnfolder]: 488/837 cut-off events. [2022-12-13 15:50:31,685 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2022-12-13 15:50:31,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3901 event pairs, 488 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2022-12-13 15:50:31,688 INFO L137 encePairwiseOnDemand]: 149/159 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2022-12-13 15:50:31,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2022-12-13 15:50:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 148 transitions. [2022-12-13 15:50:31,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2022-12-13 15:50:31,689 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 148 transitions. [2022-12-13 15:50:31,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 148 transitions. [2022-12-13 15:50:31,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:31,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 148 transitions. [2022-12-13 15:50:31,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 15:50:31,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 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 15:50:31,691 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 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 15:50:31,691 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 86 flow. Second operand 2 states and 148 transitions. [2022-12-13 15:50:31,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2022-12-13 15:50:31,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:31,692 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 54 flow [2022-12-13 15:50:31,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-12-13 15:50:31,693 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -9 predicate places. [2022-12-13 15:50:31,693 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 54 flow [2022-12-13 15:50:31,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 15:50:31,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:31,693 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:31,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:50:31,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-13 15:50:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 747290859, now seen corresponding path program 1 times [2022-12-13 15:50:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:31,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813219434] [2022-12-13 15:50:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:31,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:31,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:31,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-12-13 15:50:31,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-12-13 15:50:31,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-12-13 15:50:31,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-12-13 15:50:31,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-12-13 15:50:31,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-12-13 15:50:31,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-12-13 15:50:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:50:31,721 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:31,722 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:31,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 15:50:31,740 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:31,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,752 INFO L130 PetriNetUnfolder]: 6/159 cut-off events. [2022-12-13 15:50:31,752 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 15:50:31,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 159 events. 6/159 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 147. Up to 12 conditions per place. [2022-12-13 15:50:31,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:31,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 96 transitions, 237 flow [2022-12-13 15:50:31,763 INFO L130 PetriNetUnfolder]: 6/159 cut-off events. [2022-12-13 15:50:31,763 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 15:50:31,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 159 events. 6/159 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 147. Up to 12 conditions per place. [2022-12-13 15:50:31,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 4180 [2022-12-13 15:50:32,708 INFO L134 LiptonReduction]: Checked pairs total: 7213 [2022-12-13 15:50:32,708 INFO L136 LiptonReduction]: Total number of compositions: 79 [2022-12-13 15:50:32,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:32,710 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:32,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 15:50:32,719 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 15:50:32,719 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:32,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:32,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:32,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2022-12-13 15:50:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:32,720 INFO L85 PathProgramCache]: Analyzing trace with hash 846, now seen corresponding path program 1 times [2022-12-13 15:50:32,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:32,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969932656] [2022-12-13 15:50:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:32,727 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 15:50:32,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:32,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969932656] [2022-12-13 15:50:32,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969932656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:32,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:32,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89330341] [2022-12-13 15:50:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:32,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 175 [2022-12-13 15:50:32,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 15:50:32,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:32,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 175 [2022-12-13 15:50:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:32,983 INFO L130 PetriNetUnfolder]: 1946/2997 cut-off events. [2022-12-13 15:50:32,983 INFO L131 PetriNetUnfolder]: For 2176/2176 co-relation queries the response was YES. [2022-12-13 15:50:32,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15459 event pairs, 1946 based on Foata normal form. 0/2875 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2022-12-13 15:50:33,002 INFO L137 encePairwiseOnDemand]: 163/175 looper letters, 17 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2022-12-13 15:50:33,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2022-12-13 15:50:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2022-12-13 15:50:33,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47714285714285715 [2022-12-13 15:50:33,005 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2022-12-13 15:50:33,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2022-12-13 15:50:33,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:33,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2022-12-13 15:50:33,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 15:50:33,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 15:50:33,007 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 15:50:33,007 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 109 flow. Second operand 2 states and 167 transitions. [2022-12-13 15:50:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2022-12-13 15:50:33,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:33,011 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 65 flow [2022-12-13 15:50:33,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2022-12-13 15:50:33,012 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-12-13 15:50:33,012 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 65 flow [2022-12-13 15:50:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 15:50:33,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:33,013 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:33,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:50:33,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2022-12-13 15:50:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash 278731666, now seen corresponding path program 1 times [2022-12-13 15:50:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:33,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434090015] [2022-12-13 15:50:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:33,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:33,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:33,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:33,049 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-12-13 15:50:33,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-12-13 15:50:33,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-12-13 15:50:33,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:50:33,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:33,051 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:33,051 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-12-13 15:50:33,066 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:33,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,085 INFO L130 PetriNetUnfolder]: 7/184 cut-off events. [2022-12-13 15:50:33,085 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 15:50:33,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 184 events. 7/184 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 362 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 178. Up to 14 conditions per place. [2022-12-13 15:50:33,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:33,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,088 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 108 transitions, 276 flow [2022-12-13 15:50:33,104 INFO L130 PetriNetUnfolder]: 7/184 cut-off events. [2022-12-13 15:50:33,104 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 15:50:33,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 184 events. 7/184 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 362 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 178. Up to 14 conditions per place. [2022-12-13 15:50:33,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2022-12-13 15:50:34,276 INFO L134 LiptonReduction]: Checked pairs total: 10480 [2022-12-13 15:50:34,276 INFO L136 LiptonReduction]: Total number of compositions: 91 [2022-12-13 15:50:34,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:34,278 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:34,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-13 15:50:34,278 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:34,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:34,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:34,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:34,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 15:50:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1056, now seen corresponding path program 1 times [2022-12-13 15:50:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337967741] [2022-12-13 15:50:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:34,283 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 15:50:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337967741] [2022-12-13 15:50:34,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337967741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:34,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:34,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692780352] [2022-12-13 15:50:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:34,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2022-12-13 15:50:34,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 15:50:34,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:34,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2022-12-13 15:50:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:35,007 INFO L130 PetriNetUnfolder]: 7292/10449 cut-off events. [2022-12-13 15:50:35,007 INFO L131 PetriNetUnfolder]: For 9628/9628 co-relation queries the response was YES. [2022-12-13 15:50:35,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57391 event pairs, 7292 based on Foata normal form. 0/10085 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2022-12-13 15:50:35,072 INFO L137 encePairwiseOnDemand]: 185/199 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2022-12-13 15:50:35,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2022-12-13 15:50:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2022-12-13 15:50:35,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46733668341708545 [2022-12-13 15:50:35,074 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 186 transitions. [2022-12-13 15:50:35,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 186 transitions. [2022-12-13 15:50:35,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:35,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 186 transitions. [2022-12-13 15:50:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 15:50:35,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 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 15:50:35,076 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 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 15:50:35,076 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 134 flow. Second operand 2 states and 186 transitions. [2022-12-13 15:50:35,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2022-12-13 15:50:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:35,084 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 76 flow [2022-12-13 15:50:35,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 15:50:35,084 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2022-12-13 15:50:35,084 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 76 flow [2022-12-13 15:50:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 15:50:35,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:35,085 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:35,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:50:35,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-13 15:50:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2040036814, now seen corresponding path program 1 times [2022-12-13 15:50:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:35,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639890268] [2022-12-13 15:50:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:35,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:35,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:35,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2022-12-13 15:50:35,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2022-12-13 15:50:35,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2022-12-13 15:50:35,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:50:35,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:35,110 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:35,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-12-13 15:50:35,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:35,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,146 INFO L130 PetriNetUnfolder]: 8/209 cut-off events. [2022-12-13 15:50:35,146 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 15:50:35,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 209 events. 8/209 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 461 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 210. Up to 16 conditions per place. [2022-12-13 15:50:35,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:35,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 120 transitions, 317 flow [2022-12-13 15:50:35,174 INFO L130 PetriNetUnfolder]: 8/209 cut-off events. [2022-12-13 15:50:35,174 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 15:50:35,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 209 events. 8/209 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 461 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 210. Up to 16 conditions per place. [2022-12-13 15:50:35,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2022-12-13 15:50:36,431 INFO L134 LiptonReduction]: Checked pairs total: 15630 [2022-12-13 15:50:36,432 INFO L136 LiptonReduction]: Total number of compositions: 97 [2022-12-13 15:50:36,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:36,433 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:36,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 15:50:36,433 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:36,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:36,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:36,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:36,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2022-12-13 15:50:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2022-12-13 15:50:36,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:36,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419608062] [2022-12-13 15:50:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:36,437 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 15:50:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419608062] [2022-12-13 15:50:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419608062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:36,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:36,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324391993] [2022-12-13 15:50:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:36,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 217 [2022-12-13 15:50:36,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 161 flow. Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 15:50:36,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:36,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 217 [2022-12-13 15:50:36,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:38,751 INFO L130 PetriNetUnfolder]: 26246/35721 cut-off events. [2022-12-13 15:50:38,751 INFO L131 PetriNetUnfolder]: For 40003/40003 co-relation queries the response was YES. [2022-12-13 15:50:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205745 event pairs, 26246 based on Foata normal form. 0/34627 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2022-12-13 15:50:38,918 INFO L137 encePairwiseOnDemand]: 201/217 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 15:50:38,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2022-12-13 15:50:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2022-12-13 15:50:38,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47235023041474655 [2022-12-13 15:50:38,919 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2022-12-13 15:50:38,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2022-12-13 15:50:38,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:38,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2022-12-13 15:50:38,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 15:50:38,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 15:50:38,921 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 15:50:38,921 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 161 flow. Second operand 2 states and 205 transitions. [2022-12-13 15:50:38,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2022-12-13 15:50:38,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:38,974 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 87 flow [2022-12-13 15:50:38,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2022-12-13 15:50:38,974 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2022-12-13 15:50:38,975 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 87 flow [2022-12-13 15:50:38,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 15:50:38,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:38,975 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:38,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:50:38,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2022-12-13 15:50:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1724141298, now seen corresponding path program 1 times [2022-12-13 15:50:38,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:38,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255047762] [2022-12-13 15:50:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:38,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:38,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:38,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:38,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-12-13 15:50:38,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-12-13 15:50:38,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-12-13 15:50:38,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:50:38,998 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:38,999 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:38,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-12-13 15:50:39,015 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:39,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,070 INFO L130 PetriNetUnfolder]: 9/234 cut-off events. [2022-12-13 15:50:39,070 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 15:50:39,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 234 events. 9/234 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 508 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 243. Up to 18 conditions per place. [2022-12-13 15:50:39,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:39,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 132 transitions, 360 flow [2022-12-13 15:50:39,094 INFO L130 PetriNetUnfolder]: 9/234 cut-off events. [2022-12-13 15:50:39,094 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 15:50:39,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 234 events. 9/234 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 508 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 243. Up to 18 conditions per place. [2022-12-13 15:50:39,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 9856 [2022-12-13 15:50:40,293 INFO L134 LiptonReduction]: Checked pairs total: 21271 [2022-12-13 15:50:40,293 INFO L136 LiptonReduction]: Total number of compositions: 106 [2022-12-13 15:50:40,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:40,295 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:40,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-13 15:50:40,296 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:40,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:40,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:40,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:40,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 15:50:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1534, now seen corresponding path program 1 times [2022-12-13 15:50:40,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:40,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655338102] [2022-12-13 15:50:40,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:40,303 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 15:50:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:40,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655338102] [2022-12-13 15:50:40,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655338102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:40,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:40,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277625267] [2022-12-13 15:50:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:40,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 238 [2022-12-13 15:50:40,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 190 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 15:50:40,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:40,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 238 [2022-12-13 15:50:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:48,572 INFO L130 PetriNetUnfolder]: 91856/120285 cut-off events. [2022-12-13 15:50:48,573 INFO L131 PetriNetUnfolder]: For 158830/158830 co-relation queries the response was YES. [2022-12-13 15:50:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 716660 event pairs, 91856 based on Foata normal form. 0/117005 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2022-12-13 15:50:49,234 INFO L137 encePairwiseOnDemand]: 220/238 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-12-13 15:50:49,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2022-12-13 15:50:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:50:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:50:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2022-12-13 15:50:49,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-12-13 15:50:49,236 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2022-12-13 15:50:49,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2022-12-13 15:50:49,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:49,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2022-12-13 15:50:49,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 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 15:50:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 15:50:49,238 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 15:50:49,239 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 190 flow. Second operand 2 states and 224 transitions. [2022-12-13 15:50:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2022-12-13 15:50:49,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-12-13 15:50:49,438 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 98 flow [2022-12-13 15:50:49,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2022-12-13 15:50:49,438 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -17 predicate places. [2022-12-13 15:50:49,438 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 98 flow [2022-12-13 15:50:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 15:50:49,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:49,439 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:49,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:50:49,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 15:50:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1999149704, now seen corresponding path program 1 times [2022-12-13 15:50:49,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:49,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459189673] [2022-12-13 15:50:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:49,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:49,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:50:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:50:49,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:50:49,470 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:50:49,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2022-12-13 15:50:49,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2022-12-13 15:50:49,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2022-12-13 15:50:49,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2022-12-13 15:50:49,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2022-12-13 15:50:49,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2022-12-13 15:50:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:50:49,473 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:50:49,474 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:50:49,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-12-13 15:50:49,496 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:50:49,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,523 INFO L130 PetriNetUnfolder]: 10/259 cut-off events. [2022-12-13 15:50:49,524 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 15:50:49,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 259 events. 10/259 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 571 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 277. Up to 20 conditions per place. [2022-12-13 15:50:49,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:50:49,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 144 transitions, 405 flow [2022-12-13 15:50:49,553 INFO L130 PetriNetUnfolder]: 10/259 cut-off events. [2022-12-13 15:50:49,553 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 15:50:49,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 259 events. 10/259 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 571 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 277. Up to 20 conditions per place. [2022-12-13 15:50:49,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 12276 [2022-12-13 15:50:51,093 INFO L134 LiptonReduction]: Checked pairs total: 25816 [2022-12-13 15:50:51,093 INFO L136 LiptonReduction]: Total number of compositions: 117 [2022-12-13 15:50:51,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:50:51,095 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:50:51,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 15:50:51,095 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:50:51,095 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:50:51,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:51,095 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:50:51,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2022-12-13 15:50:51,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:51,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1807, now seen corresponding path program 1 times [2022-12-13 15:50:51,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:51,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390654638] [2022-12-13 15:50:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:51,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:51,101 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 15:50:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390654638] [2022-12-13 15:50:51,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390654638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:50:51,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:50:51,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:50:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489938094] [2022-12-13 15:50:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:50:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:50:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:50:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:50:51,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 261 [2022-12-13 15:50:51,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 221 flow. Second operand has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 15:50:51,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:51,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 261 [2022-12-13 15:50:51,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:51:18,776 INFO L130 PetriNetUnfolder]: 314930/400221 cut-off events. [2022-12-13 15:51:18,776 INFO L131 PetriNetUnfolder]: For 609352/609352 co-relation queries the response was YES. [2022-12-13 15:51:19,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2454855 event pairs, 314930 based on Foata normal form. 0/390380 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2022-12-13 15:51:21,000 INFO L137 encePairwiseOnDemand]: 241/261 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-13 15:51:21,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2022-12-13 15:51:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:51:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:51:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 243 transitions. [2022-12-13 15:51:21,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2022-12-13 15:51:21,002 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 243 transitions. [2022-12-13 15:51:21,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 243 transitions. [2022-12-13 15:51:21,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:51:21,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 243 transitions. [2022-12-13 15:51:21,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 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 15:51:21,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 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 15:51:21,005 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 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 15:51:21,005 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 221 flow. Second operand 2 states and 243 transitions. [2022-12-13 15:51:21,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2022-12-13 15:51:21,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-12-13 15:51:21,582 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 109 flow [2022-12-13 15:51:21,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2022-12-13 15:51:21,583 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -19 predicate places. [2022-12-13 15:51:21,583 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 109 flow [2022-12-13 15:51:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 15:51:21,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:51:21,584 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:51:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:51:21,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2022-12-13 15:51:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:51:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -598114192, now seen corresponding path program 1 times [2022-12-13 15:51:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:51:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804581426] [2022-12-13 15:51:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:51:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:51:21,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:51:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:51:21,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:51:21,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 15:51:21,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 15:51:21,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 15:51:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:51:21,615 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:51:21,615 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:51:21,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2022-12-13 15:51:21,632 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:51:21,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,655 INFO L130 PetriNetUnfolder]: 11/284 cut-off events. [2022-12-13 15:51:21,655 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 15:51:21,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 284 events. 11/284 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 618 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 312. Up to 22 conditions per place. [2022-12-13 15:51:21,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:51:21,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 156 transitions, 452 flow [2022-12-13 15:51:21,679 INFO L130 PetriNetUnfolder]: 11/284 cut-off events. [2022-12-13 15:51:21,679 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 15:51:21,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 284 events. 11/284 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 618 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 312. Up to 22 conditions per place. [2022-12-13 15:51:21,685 INFO L119 LiptonReduction]: Number of co-enabled transitions 14960 [2022-12-13 15:51:22,996 INFO L134 LiptonReduction]: Checked pairs total: 29396 [2022-12-13 15:51:22,996 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-12-13 15:51:22,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:51:22,997 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:51:22,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-13 15:51:22,997 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:51:22,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:51:22,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:51:22,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:51:22,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 15:51:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:51:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2099, now seen corresponding path program 1 times [2022-12-13 15:51:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:51:22,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869128298] [2022-12-13 15:51:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:51:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:51:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:51:23,003 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 15:51:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:51:23,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869128298] [2022-12-13 15:51:23,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869128298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:51:23,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:51:23,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:51:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861734187] [2022-12-13 15:51:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:51:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:51:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:51:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:51:23,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:51:23,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 280 [2022-12-13 15:51:23,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 15:51:23,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:51:23,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 280 [2022-12-13 15:51:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:53:00,588 INFO L130 PetriNetUnfolder]: 1062884/1318761 cut-off events. [2022-12-13 15:53:00,588 INFO L131 PetriNetUnfolder]: For 2275846/2275846 co-relation queries the response was YES. [2022-12-13 15:53:03,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065640 conditions, 1318761 events. 1062884/1318761 cut-off events. For 2275846/2275846 co-relation queries the response was YES. Maximal size of possible extension queue 34649. Compared 8263984 event pairs, 1062884 based on Foata normal form. 0/1289237 useless extension candidates. Maximal degree in co-relation 943144. Up to 1240031 conditions per place. [2022-12-13 15:53:08,054 INFO L137 encePairwiseOnDemand]: 258/280 looper letters, 32 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-12-13 15:53:08,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 274 flow [2022-12-13 15:53:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:53:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:53:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2022-12-13 15:53:08,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46785714285714286 [2022-12-13 15:53:08,056 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2022-12-13 15:53:08,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2022-12-13 15:53:08,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:53:08,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2022-12-13 15:53:08,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 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 15:53:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 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 15:53:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 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 15:53:08,060 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 254 flow. Second operand 2 states and 262 transitions. [2022-12-13 15:53:08,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 274 flow [2022-12-13 15:53:12,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 35 transitions, 184 flow, removed 45 selfloop flow, removed 0 redundant places. [2022-12-13 15:53:12,172 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 120 flow [2022-12-13 15:53:12,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2022-12-13 15:53:12,173 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, -21 predicate places. [2022-12-13 15:53:12,173 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 120 flow [2022-12-13 15:53:12,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 15:53:12,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:53:12,173 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:53:12,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:53:12,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2022-12-13 15:53:12,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:53:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash 667439188, now seen corresponding path program 1 times [2022-12-13 15:53:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:53:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271850947] [2022-12-13 15:53:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:53:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:53:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:53:12,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:53:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:53:12,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:53:12,202 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:53:12,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-12-13 15:53:12,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-12-13 15:53:12,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-12-13 15:53:12,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-12-13 15:53:12,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-12-13 15:53:12,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-12-13 15:53:12,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-12-13 15:53:12,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:53:12,205 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:53:12,205 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:53:12,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2022-12-13 15:53:12,231 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:53:12,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,260 INFO L130 PetriNetUnfolder]: 12/309 cut-off events. [2022-12-13 15:53:12,260 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-12-13 15:53:12,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 309 events. 12/309 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 691 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 350. Up to 24 conditions per place. [2022-12-13 15:53:12,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:53:12,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 168 transitions, 501 flow [2022-12-13 15:53:12,289 INFO L130 PetriNetUnfolder]: 12/309 cut-off events. [2022-12-13 15:53:12,289 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-12-13 15:53:12,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 309 events. 12/309 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 691 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 350. Up to 24 conditions per place. [2022-12-13 15:53:12,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 17908 [2022-12-13 15:53:13,988 INFO L134 LiptonReduction]: Checked pairs total: 38611 [2022-12-13 15:53:13,989 INFO L136 LiptonReduction]: Total number of compositions: 136 [2022-12-13 15:53:13,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:53:13,990 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;@39a91704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:53:13,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 15:53:13,991 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:53:13,991 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:53:13,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:53:13,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:53:13,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 22 more)] === [2022-12-13 15:53:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:53:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2415, now seen corresponding path program 1 times [2022-12-13 15:53:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:53:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911969916] [2022-12-13 15:53:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:53:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:53:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:53:13,997 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 15:53:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:53:13,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911969916] [2022-12-13 15:53:13,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911969916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:53:13,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:53:13,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:53:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951649035] [2022-12-13 15:53:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:53:13,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:53:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:53:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:53:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:53:13,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 304 [2022-12-13 15:53:13,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 289 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 15:53:13,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:53:13,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 304 [2022-12-13 15:53:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand