./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS --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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- 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-4e7fbc6 [2022-11-23 02:11:39,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:11:39,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:11:39,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:11:39,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:11:39,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:11:39,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:11:39,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:11:39,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:11:39,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:11:39,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:11:39,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:11:39,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:11:39,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:11:39,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:11:39,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:11:39,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:11:39,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:11:39,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:11:39,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:11:39,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:11:39,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:11:39,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:11:39,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:11:39,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:11:39,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:11:39,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:11:39,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:11:39,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:11:39,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:11:39,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:11:39,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:11:39,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:11:39,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:11:39,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:11:39,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:11:39,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:11:39,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:11:39,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:11:39,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:11:39,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:11:39,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 02:11:39,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:11:39,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:11:39,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:11:39,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:11:39,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:11:39,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:11:39,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:11:39,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:11:39,390 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:11:39,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:11:39,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:11:39,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:11:39,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:11:39,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:11:39,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:11:39,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:11:39,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:11:39,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:11:39,393 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 02:11:39,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:11:39,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:11:39,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:11:39,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:11:39,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:11:39,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:11:39,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:11:39,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:11:39,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:11:39,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:11:39,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:11:39,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:11:39,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:11:39,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:11:39,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:11:39,398 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:11:39,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:11:39,399 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_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2022-11-23 02:11:39,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:11:39,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:11:39,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:11:39,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:11:39,747 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:11:39,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-23 02:11:42,689 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:11:43,009 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:11:43,010 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-23 02:11:43,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/data/b78c325d0/5f1869f1ba564cffae88eafbe77c5aba/FLAG463b20b9e [2022-11-23 02:11:43,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/data/b78c325d0/5f1869f1ba564cffae88eafbe77c5aba [2022-11-23 02:11:43,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:11:43,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:11:43,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:11:43,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:11:43,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:11:43,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c212ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43, skipping insertion in model container [2022-11-23 02:11:43,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:11:43,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:11:43,593 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_ee56c6ca-6897-417f-9186-9dcf12233e63/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-23 02:11:43,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:11:43,678 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:11:43,754 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_ee56c6ca-6897-417f-9186-9dcf12233e63/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-23 02:11:43,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:11:43,871 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:11:43,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43 WrapperNode [2022-11-23 02:11:43,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:11:43,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:11:43,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:11:43,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:11:43,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,965 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2022-11-23 02:11:43,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:11:43,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:11:43,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:11:43,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:11:43,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:43,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:11:44,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:11:44,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:11:44,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:11:44,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (1/1) ... [2022-11-23 02:11:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:11:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:44,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:11:44,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:11:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:11:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:11:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:11:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:11:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:11:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:11:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 02:11:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 02:11:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:11:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:11:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:11:44,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:11:44,321 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:11:44,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:11:44,894 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:11:44,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:11:44,909 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-23 02:11:44,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:44 BoogieIcfgContainer [2022-11-23 02:11:44,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:11:44,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:11:44,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:11:44,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:11:44,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:43" (1/3) ... [2022-11-23 02:11:44,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be246cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:44, skipping insertion in model container [2022-11-23 02:11:44,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:43" (2/3) ... [2022-11-23 02:11:44,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be246cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:44, skipping insertion in model container [2022-11-23 02:11:44,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:44" (3/3) ... [2022-11-23 02:11:44,925 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2022-11-23 02:11:44,959 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:11:44,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:11:44,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-23 02:11:44,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:11:45,136 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 02:11:45,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,305 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-23 02:11:45,305 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-23 02:11:45,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1542 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-23 02:11:45,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,326 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:11:45,345 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-23 02:11:45,450 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-23 02:11:45,451 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-23 02:11:45,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1542 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-23 02:11:45,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 24804 [2022-11-23 02:11:52,549 INFO L134 LiptonReduction]: Checked pairs total: 195197 [2022-11-23 02:11:52,550 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-11-23 02:11:52,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:11:52,575 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;@50f2777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:11:52,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-23 02:11:52,581 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2022-11-23 02:11:52,581 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:11:52,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:11:52,583 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 02:11:52,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-23 02:11:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1330379676, now seen corresponding path program 1 times [2022-11-23 02:11:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011749410] [2022-11-23 02:11:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:52,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:52,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011749410] [2022-11-23 02:11:52,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011749410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:11:52,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:11:52,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:11:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115766004] [2022-11-23 02:11:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:11:52,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:11:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:11:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:11:52,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 504 [2022-11-23 02:11:52,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:52,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:11:52,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 504 [2022-11-23 02:11:52,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:11:53,413 INFO L130 PetriNetUnfolder]: 400/1571 cut-off events. [2022-11-23 02:11:53,414 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-23 02:11:53,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1571 events. 400/1571 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11212 event pairs, 357 based on Foata normal form. 205/1658 useless extension candidates. Maximal degree in co-relation 2267. Up to 789 conditions per place. [2022-11-23 02:11:53,434 INFO L137 encePairwiseOnDemand]: 479/504 looper letters, 43 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-11-23 02:11:53,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 324 flow [2022-11-23 02:11:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:11:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:11:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-11-23 02:11:53,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5152116402116402 [2022-11-23 02:11:53,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-11-23 02:11:53,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-11-23 02:11:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:11:53,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-11-23 02:11:53,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:53,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:53,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:53,507 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 276 flow. Second operand 3 states and 779 transitions. [2022-11-23 02:11:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 324 flow [2022-11-23 02:11:53,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:11:53,516 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 244 flow [2022-11-23 02:11:53,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2022-11-23 02:11:53,522 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-11-23 02:11:53,522 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 244 flow [2022-11-23 02:11:53,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:53,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:11:53,524 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:11:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:11:53,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-23 02:11:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -37238111, now seen corresponding path program 1 times [2022-11-23 02:11:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467416695] [2022-11-23 02:11:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:53,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:53,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467416695] [2022-11-23 02:11:53,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467416695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:11:53,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189754620] [2022-11-23 02:11:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:53,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:53,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:53,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:11:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:53,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:11:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:53,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:11:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:53,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189754620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:11:53,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:11:53,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:11:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850558078] [2022-11-23 02:11:53,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:11:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:11:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:11:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:11:53,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 504 [2022-11-23 02:11:53,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:53,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:11:53,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 504 [2022-11-23 02:11:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:11:54,300 INFO L130 PetriNetUnfolder]: 400/1574 cut-off events. [2022-11-23 02:11:54,300 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-23 02:11:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 1574 events. 400/1574 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11185 event pairs, 357 based on Foata normal form. 0/1456 useless extension candidates. Maximal degree in co-relation 2372. Up to 789 conditions per place. [2022-11-23 02:11:54,347 INFO L137 encePairwiseOnDemand]: 501/504 looper letters, 43 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-23 02:11:54,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 352 flow [2022-11-23 02:11:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:11:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:11:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-11-23 02:11:54,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2022-11-23 02:11:54,352 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-11-23 02:11:54,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-11-23 02:11:54,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:11:54,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-11-23 02:11:54,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,366 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 244 flow. Second operand 6 states and 1467 transitions. [2022-11-23 02:11:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 352 flow [2022-11-23 02:11:54,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 02:11:54,370 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 276 flow [2022-11-23 02:11:54,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-11-23 02:11:54,372 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 10 predicate places. [2022-11-23 02:11:54,372 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 276 flow [2022-11-23 02:11:54,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:54,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:11:54,374 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-23 02:11:54,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:54,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-23 02:11:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 982657956, now seen corresponding path program 2 times [2022-11-23 02:11:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:54,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172097687] [2022-11-23 02:11:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:11:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:11:54,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172097687] [2022-11-23 02:11:54,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172097687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:11:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31014936] [2022-11-23 02:11:54,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:11:54,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:11:54,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:11:54,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:11:54,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:11:54,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:11:54,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:11:54,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:11:54,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:11:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:54,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:11:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:11:54,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31014936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:11:54,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:11:54,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:11:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368550627] [2022-11-23 02:11:54,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:11:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:11:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:11:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:11:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:11:55,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 504 [2022-11-23 02:11:55,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:55,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:11:55,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 504 [2022-11-23 02:11:55,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:11:55,356 INFO L130 PetriNetUnfolder]: 400/1580 cut-off events. [2022-11-23 02:11:55,357 INFO L131 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2022-11-23 02:11:55,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 1580 events. 400/1580 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11238 event pairs, 357 based on Foata normal form. 6/1469 useless extension candidates. Maximal degree in co-relation 2363. Up to 789 conditions per place. [2022-11-23 02:11:55,366 INFO L137 encePairwiseOnDemand]: 501/504 looper letters, 43 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2022-11-23 02:11:55,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 420 flow [2022-11-23 02:11:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:11:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:11:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2022-11-23 02:11:55,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2022-11-23 02:11:55,374 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2022-11-23 02:11:55,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2022-11-23 02:11:55,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:11:55,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2022-11-23 02:11:55,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:55,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:55,397 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:55,398 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 276 flow. Second operand 12 states and 2892 transitions. [2022-11-23 02:11:55,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 420 flow [2022-11-23 02:11:55,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:11:55,402 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 346 flow [2022-11-23 02:11:55,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2022-11-23 02:11:55,403 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 26 predicate places. [2022-11-23 02:11:55,404 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 346 flow [2022-11-23 02:11:55,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:11:55,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:11:55,406 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-23 02:11:55,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:11:55,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 02:11:55,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-23 02:11:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:11:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1444010628, now seen corresponding path program 3 times [2022-11-23 02:11:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:11:55,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979871962] [2022-11-23 02:11:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:11:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:11:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:11:55,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:11:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:11:55,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:11:55,737 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:11:55,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-23 02:11:55,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-23 02:11:55,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-23 02:11:55,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-23 02:11:55,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-23 02:11:55,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-23 02:11:55,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-23 02:11:55,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-23 02:11:55,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-23 02:11:55,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-23 02:11:55,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-23 02:11:55,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-23 02:11:55,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-23 02:11:55,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-23 02:11:55,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-23 02:11:55,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-23 02:11:55,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-23 02:11:55,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:11:55,750 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 02:11:55,754 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:11:55,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 02:11:55,842 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:11:55,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:55,977 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-23 02:11:55,977 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-23 02:11:55,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3143 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-23 02:11:55,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:55,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:55,996 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:11:55,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:55,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:55,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-23 02:11:56,126 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-23 02:11:56,126 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-23 02:11:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3143 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-23 02:11:56,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 74412 [2022-11-23 02:12:07,251 INFO L134 LiptonReduction]: Checked pairs total: 585248 [2022-11-23 02:12:07,252 INFO L136 LiptonReduction]: Total number of compositions: 331 [2022-11-23 02:12:07,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:12:07,261 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;@50f2777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:12:07,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-23 02:12:07,272 INFO L130 PetriNetUnfolder]: 25/87 cut-off events. [2022-11-23 02:12:07,272 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:12:07,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:07,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:07,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 02:12:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1952437699, now seen corresponding path program 1 times [2022-11-23 02:12:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444519034] [2022-11-23 02:12:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:12:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444519034] [2022-11-23 02:12:07,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444519034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:12:07,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:12:07,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:12:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514040122] [2022-11-23 02:12:07,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:12:07,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:12:07,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:12:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:12:07,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 711 [2022-11-23 02:12:07,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 198 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:07,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:12:07,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 711 [2022-11-23 02:12:07,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:12:12,238 INFO L130 PetriNetUnfolder]: 14783/35965 cut-off events. [2022-11-23 02:12:12,238 INFO L131 PetriNetUnfolder]: For 172/202 co-relation queries the response was YES. [2022-11-23 02:12:12,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58061 conditions, 35965 events. 14783/35965 cut-off events. For 172/202 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 396155 event pairs, 13600 based on Foata normal form. 5410/38267 useless extension candidates. Maximal degree in co-relation 27840. Up to 21982 conditions per place. [2022-11-23 02:12:12,555 INFO L137 encePairwiseOnDemand]: 675/711 looper letters, 62 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2022-11-23 02:12:12,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 478 flow [2022-11-23 02:12:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:12:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:12:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-11-23 02:12:12,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5100796999531176 [2022-11-23 02:12:12,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-11-23 02:12:12,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-11-23 02:12:12,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:12:12,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-11-23 02:12:12,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,574 INFO L175 Difference]: Start difference. First operand has 164 places, 198 transitions, 414 flow. Second operand 3 states and 1088 transitions. [2022-11-23 02:12:12,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 478 flow [2022-11-23 02:12:12,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:12:12,582 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2022-11-23 02:12:12,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2022-11-23 02:12:12,586 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2022-11-23 02:12:12,586 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2022-11-23 02:12:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:12,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:12:12,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 02:12:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1902519423, now seen corresponding path program 1 times [2022-11-23 02:12:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520049507] [2022-11-23 02:12:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:12:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:12,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520049507] [2022-11-23 02:12:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520049507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:12:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764495663] [2022-11-23 02:12:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:12,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:12,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:12,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:12:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:12:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:12:12,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:12:12,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764495663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:12:12,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:12:12,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-23 02:12:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887676618] [2022-11-23 02:12:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:12:12,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:12:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:12:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:12:12,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 711 [2022-11-23 02:12:12,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:12,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:12:12,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 711 [2022-11-23 02:12:12,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:12:17,058 INFO L130 PetriNetUnfolder]: 14363/35817 cut-off events. [2022-11-23 02:12:17,058 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-11-23 02:12:17,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57492 conditions, 35817 events. 14363/35817 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 403474 event pairs, 6494 based on Foata normal form. 0/33044 useless extension candidates. Maximal degree in co-relation 57479. Up to 21515 conditions per place. [2022-11-23 02:12:17,314 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 81 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2022-11-23 02:12:17,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 564 flow [2022-11-23 02:12:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:12:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:12:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-11-23 02:12:17,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503047351148617 [2022-11-23 02:12:17,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-11-23 02:12:17,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-11-23 02:12:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:12:17,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-11-23 02:12:17,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:17,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:17,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 711.0) internal successors, (2844), 4 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:17,334 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1073 transitions. [2022-11-23 02:12:17,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 564 flow [2022-11-23 02:12:17,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 185 transitions, 560 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 02:12:17,344 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2022-11-23 02:12:17,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2022-11-23 02:12:17,349 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2022-11-23 02:12:17,349 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2022-11-23 02:12:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:17,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:17,350 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:17,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:12:17,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 02:12:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2012184053, now seen corresponding path program 1 times [2022-11-23 02:12:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:17,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846707004] [2022-11-23 02:12:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:17,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846707004] [2022-11-23 02:12:17,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846707004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:12:17,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362933881] [2022-11-23 02:12:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:17,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:17,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:17,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:17,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:12:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:17,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:12:17,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:17,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:12:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362933881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:12:17,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:12:17,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:12:17,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021833379] [2022-11-23 02:12:17,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:12:17,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:12:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:12:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:12:17,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 711 [2022-11-23 02:12:17,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:17,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:12:17,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 711 [2022-11-23 02:12:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:12:22,103 INFO L130 PetriNetUnfolder]: 14781/36107 cut-off events. [2022-11-23 02:12:22,104 INFO L131 PetriNetUnfolder]: For 855/855 co-relation queries the response was YES. [2022-11-23 02:12:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58929 conditions, 36107 events. 14781/36107 cut-off events. For 855/855 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 399625 event pairs, 13600 based on Foata normal form. 3/33372 useless extension candidates. Maximal degree in co-relation 58901. Up to 21993 conditions per place. [2022-11-23 02:12:22,351 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 63 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2022-11-23 02:12:22,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 516 flow [2022-11-23 02:12:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:12:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:12:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2044 transitions. [2022-11-23 02:12:22,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47913736521331457 [2022-11-23 02:12:22,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2044 transitions. [2022-11-23 02:12:22,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2044 transitions. [2022-11-23 02:12:22,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:12:22,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2044 transitions. [2022-11-23 02:12:22,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.6666666666667) internal successors, (2044), 6 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:22,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:22,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 711.0) internal successors, (4977), 7 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:22,382 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2044 transitions. [2022-11-23 02:12:22,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 516 flow [2022-11-23 02:12:22,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:12:22,389 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2022-11-23 02:12:22,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-11-23 02:12:22,391 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2022-11-23 02:12:22,391 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2022-11-23 02:12:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:22,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:22,393 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:12:22,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:12:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:22,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 02:12:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1322021048, now seen corresponding path program 2 times [2022-11-23 02:12:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074315236] [2022-11-23 02:12:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:22,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074315236] [2022-11-23 02:12:22,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074315236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:12:22,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180029328] [2022-11-23 02:12:22,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:12:22,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:12:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:22,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:12:22,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:12:22,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:12:22,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:12:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:12:22,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:12:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:22,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:12:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 02:12:23,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180029328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:12:23,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:12:23,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:12:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037448889] [2022-11-23 02:12:23,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:12:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:12:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:12:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:12:23,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 711 [2022-11-23 02:12:23,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:23,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:12:23,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 711 [2022-11-23 02:12:23,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:12:27,392 INFO L130 PetriNetUnfolder]: 14781/36113 cut-off events. [2022-11-23 02:12:27,392 INFO L131 PetriNetUnfolder]: For 889/889 co-relation queries the response was YES. [2022-11-23 02:12:27,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58950 conditions, 36113 events. 14781/36113 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 399825 event pairs, 13600 based on Foata normal form. 6/33381 useless extension candidates. Maximal degree in co-relation 58890. Up to 21993 conditions per place. [2022-11-23 02:12:27,608 INFO L137 encePairwiseOnDemand]: 708/711 looper letters, 63 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2022-11-23 02:12:27,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 586 flow [2022-11-23 02:12:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:12:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:12:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4027 transitions. [2022-11-23 02:12:27,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4719878105954055 [2022-11-23 02:12:27,622 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4027 transitions. [2022-11-23 02:12:27,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4027 transitions. [2022-11-23 02:12:27,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:12:27,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4027 transitions. [2022-11-23 02:12:27,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 335.5833333333333) internal successors, (4027), 12 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:27,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 711.0) internal successors, (9243), 13 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:27,659 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 711.0) internal successors, (9243), 13 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:27,660 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 12 states and 4027 transitions. [2022-11-23 02:12:27,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 586 flow [2022-11-23 02:12:27,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 572 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:12:27,667 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 472 flow [2022-11-23 02:12:27,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=711, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=472, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2022-11-23 02:12:27,669 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2022-11-23 02:12:27,669 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 472 flow [2022-11-23 02:12:27,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:27,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:27,671 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:12:27,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 02:12:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee56c6ca-6897-417f-9186-9dcf12233e63/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 02:12:27,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 02:12:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1510569880, now seen corresponding path program 3 times [2022-11-23 02:12:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:27,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640754996] [2022-11-23 02:12:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:12:27,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:12:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:12:28,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:12:28,005 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:12:28,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-23 02:12:28,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-23 02:12:28,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-23 02:12:28,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-23 02:12:28,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-23 02:12:28,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-23 02:12:28,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-23 02:12:28,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-23 02:12:28,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-23 02:12:28,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-23 02:12:28,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-23 02:12:28,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-23 02:12:28,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-23 02:12:28,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-23 02:12:28,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-23 02:12:28,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-23 02:12:28,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-23 02:12:28,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-23 02:12:28,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-23 02:12:28,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-23 02:12:28,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-23 02:12:28,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-23 02:12:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:12:28,013 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-23 02:12:28,014 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:12:28,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 02:12:28,074 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:12:28,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,417 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-11-23 02:12:28,418 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-11-23 02:12:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5114 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-23 02:12:28,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,463 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:12:28,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-11-23 02:12:28,995 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-11-23 02:12:28,995 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-11-23 02:12:29,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5114 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-23 02:12:29,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 146280 [2022-11-23 02:12:43,665 INFO L134 LiptonReduction]: Checked pairs total: 1197810 [2022-11-23 02:12:43,665 INFO L136 LiptonReduction]: Total number of compositions: 428 [2022-11-23 02:12:43,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:12:43,668 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;@50f2777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:12:43,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-23 02:12:43,676 INFO L130 PetriNetUnfolder]: 26/98 cut-off events. [2022-11-23 02:12:43,676 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:12:43,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:12:43,677 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:12:43,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-23 02:12:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:12:43,678 INFO L85 PathProgramCache]: Analyzing trace with hash -143172861, now seen corresponding path program 1 times [2022-11-23 02:12:43,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:12:43,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944750008] [2022-11-23 02:12:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:12:43,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:12:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:12:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:12:43,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:12:43,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944750008] [2022-11-23 02:12:43,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944750008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:12:43,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:12:43,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:12:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38646614] [2022-11-23 02:12:43,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:12:43,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:12:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:12:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:12:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:12:43,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 916 [2022-11-23 02:12:43,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 255 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:12:43,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:12:43,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 916 [2022-11-23 02:12:43,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand